diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.activate_entitlement.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.activate_entitlement.js
index fe3b4bb7e49..4f3c8747897 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.activate_entitlement.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.activate_entitlement.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_ActivateEntitlement_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.cancel_entitlement.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.cancel_entitlement.js
index 3051af0e315..c664417d41e 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.cancel_entitlement.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.cancel_entitlement.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_CancelEntitlement_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_offer.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_offer.js
index 1c61cb83a68..67749366e1f 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_offer.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_offer.js
@@ -23,6 +23,9 @@
 function main(name, offer) {
   // [START cloudchannel_v1_generated_CloudChannelService_ChangeOffer_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_parameters.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_parameters.js
index eafb4b7876c..69c955fbbe2 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_parameters.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_parameters.js
@@ -23,6 +23,9 @@
 function main(name, parameters) {
   // [START cloudchannel_v1_generated_CloudChannelService_ChangeParameters_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_renewal_settings.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_renewal_settings.js
index dafea9c647f..71b2d0efda5 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_renewal_settings.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.change_renewal_settings.js
@@ -23,6 +23,9 @@
 function main(name, renewalSettings) {
   // [START cloudchannel_v1_generated_CloudChannelService_ChangeRenewalSettings_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.check_cloud_identity_accounts_exist.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.check_cloud_identity_accounts_exist.js
index 11374689685..c519611c960 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.check_cloud_identity_accounts_exist.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.check_cloud_identity_accounts_exist.js
@@ -23,6 +23,9 @@
 function main(parent, domain) {
   // [START cloudchannel_v1_generated_CloudChannelService_CheckCloudIdentityAccountsExist_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_channel_partner_link.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_channel_partner_link.js
index 4bdf138bb32..29afadcf520 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_channel_partner_link.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_channel_partner_link.js
@@ -23,6 +23,9 @@
 function main(parent, channelPartnerLink) {
   // [START cloudchannel_v1_generated_CloudChannelService_CreateChannelPartnerLink_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_channel_partner_repricing_config.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_channel_partner_repricing_config.js
index be5b3ff0d36..ec4b22da1dd 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_channel_partner_repricing_config.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_channel_partner_repricing_config.js
@@ -23,6 +23,9 @@
 function main(parent, channelPartnerRepricingConfig) {
   // [START cloudchannel_v1_generated_CloudChannelService_CreateChannelPartnerRepricingConfig_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_customer.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_customer.js
index 732325a0f37..c7ffac50924 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_customer.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_customer.js
@@ -23,6 +23,9 @@
 function main(parent, customer) {
   // [START cloudchannel_v1_generated_CloudChannelService_CreateCustomer_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_customer_repricing_config.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_customer_repricing_config.js
index 7d0abefb2de..d7e9f1980b7 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_customer_repricing_config.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_customer_repricing_config.js
@@ -23,6 +23,9 @@
 function main(parent, customerRepricingConfig) {
   // [START cloudchannel_v1_generated_CloudChannelService_CreateCustomerRepricingConfig_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_entitlement.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_entitlement.js
index 1488a054c32..f679ab7c6c4 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_entitlement.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.create_entitlement.js
@@ -23,6 +23,9 @@
 function main(parent, entitlement) {
   // [START cloudchannel_v1_generated_CloudChannelService_CreateEntitlement_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_channel_partner_repricing_config.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_channel_partner_repricing_config.js
index 2686b50a9fe..603a19b09f3 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_channel_partner_repricing_config.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_channel_partner_repricing_config.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_DeleteChannelPartnerRepricingConfig_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_customer.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_customer.js
index 67a6018cc41..b4c54c9a8b7 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_customer.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_customer.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_DeleteCustomer_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_customer_repricing_config.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_customer_repricing_config.js
index ce74c1a9f7e..3337a795604 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_customer_repricing_config.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.delete_customer_repricing_config.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_DeleteCustomerRepricingConfig_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_channel_partner_link.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_channel_partner_link.js
index 4cbc82eac43..dc136c38aa5 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_channel_partner_link.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_channel_partner_link.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_GetChannelPartnerLink_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_channel_partner_repricing_config.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_channel_partner_repricing_config.js
index f10647a6d48..77803006a9d 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_channel_partner_repricing_config.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_channel_partner_repricing_config.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_GetChannelPartnerRepricingConfig_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_customer.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_customer.js
index ae444121e9f..7c9be5abcbe 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_customer.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_customer.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_GetCustomer_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_customer_repricing_config.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_customer_repricing_config.js
index 9a33c85a1eb..dff81702966 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_customer_repricing_config.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_customer_repricing_config.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_GetCustomerRepricingConfig_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_entitlement.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_entitlement.js
index d4fc87693ea..b9ed504c2c6 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_entitlement.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.get_entitlement.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_GetEntitlement_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.import_customer.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.import_customer.js
index b8cd40ab582..2238a6a769e 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.import_customer.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.import_customer.js
@@ -23,6 +23,9 @@
 function main(domain, cloudIdentityId, parent, overwriteIfExists) {
   // [START cloudchannel_v1_generated_CloudChannelService_ImportCustomer_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_channel_partner_links.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_channel_partner_links.js
index cfd775ea61e..5e489026828 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_channel_partner_links.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_channel_partner_links.js
@@ -23,6 +23,9 @@
 function main(parent) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListChannelPartnerLinks_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_channel_partner_repricing_configs.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_channel_partner_repricing_configs.js
index f201285ad73..7b94fd53b91 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_channel_partner_repricing_configs.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_channel_partner_repricing_configs.js
@@ -23,6 +23,9 @@
 function main(parent) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListChannelPartnerRepricingConfigs_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_customer_repricing_configs.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_customer_repricing_configs.js
index 2e46e054531..10b7419a8a3 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_customer_repricing_configs.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_customer_repricing_configs.js
@@ -23,6 +23,9 @@
 function main(parent) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListCustomerRepricingConfigs_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_customers.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_customers.js
index 28b2a254cec..462fa64938f 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_customers.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_customers.js
@@ -23,6 +23,9 @@
 function main(parent) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListCustomers_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_entitlements.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_entitlements.js
index 923c340430b..ce44dbcab28 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_entitlements.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_entitlements.js
@@ -23,6 +23,9 @@
 function main(parent) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListEntitlements_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_offers.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_offers.js
index a2dcadbb281..1f558b118af 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_offers.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_offers.js
@@ -23,6 +23,9 @@
 function main(parent) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListOffers_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_products.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_products.js
index 367a3cfff54..9f91c77921e 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_products.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_products.js
@@ -23,6 +23,9 @@
 function main(account) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListProducts_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_purchasable_offers.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_purchasable_offers.js
index 97d1cd1da30..8c64e9f9784 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_purchasable_offers.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_purchasable_offers.js
@@ -23,6 +23,9 @@
 function main(customer) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListPurchasableOffers_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_purchasable_skus.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_purchasable_skus.js
index 4ef6675de37..ea2114b37a5 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_purchasable_skus.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_purchasable_skus.js
@@ -23,6 +23,9 @@
 function main(customer) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListPurchasableSkus_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_skus.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_skus.js
index 88685298b91..6c85e15d65a 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_skus.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_skus.js
@@ -23,6 +23,9 @@
 function main(parent, account) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListSkus_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_subscribers.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_subscribers.js
index f3cbcee330c..baaa56399db 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_subscribers.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_subscribers.js
@@ -23,6 +23,9 @@
 function main(account) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListSubscribers_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_transferable_offers.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_transferable_offers.js
index e78d98768fb..852729bc047 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_transferable_offers.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_transferable_offers.js
@@ -23,6 +23,9 @@
 function main(parent, sku) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListTransferableOffers_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_transferable_skus.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_transferable_skus.js
index f6575ff2ef1..0c18ac5a79c 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_transferable_skus.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.list_transferable_skus.js
@@ -23,6 +23,9 @@
 function main(parent) {
   // [START cloudchannel_v1_generated_CloudChannelService_ListTransferableSkus_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.lookup_offer.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.lookup_offer.js
index 9da29c739e7..43c97a05551 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.lookup_offer.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.lookup_offer.js
@@ -23,6 +23,9 @@
 function main(entitlement) {
   // [START cloudchannel_v1_generated_CloudChannelService_LookupOffer_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.provision_cloud_identity.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.provision_cloud_identity.js
index c5608ffdf98..81b8b0a0ad2 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.provision_cloud_identity.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.provision_cloud_identity.js
@@ -23,6 +23,9 @@
 function main(customer) {
   // [START cloudchannel_v1_generated_CloudChannelService_ProvisionCloudIdentity_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.register_subscriber.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.register_subscriber.js
index 6aa41724ce7..a25e0a9dbf1 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.register_subscriber.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.register_subscriber.js
@@ -23,6 +23,9 @@
 function main(account, serviceAccount) {
   // [START cloudchannel_v1_generated_CloudChannelService_RegisterSubscriber_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.start_paid_service.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.start_paid_service.js
index c6f64ac4b99..6140f736ef7 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.start_paid_service.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.start_paid_service.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_StartPaidService_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.suspend_entitlement.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.suspend_entitlement.js
index d4c9efae67c..736e5f95c44 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.suspend_entitlement.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.suspend_entitlement.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudchannel_v1_generated_CloudChannelService_SuspendEntitlement_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.transfer_entitlements.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.transfer_entitlements.js
index 222f65cf1b8..3320c0f434b 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.transfer_entitlements.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.transfer_entitlements.js
@@ -23,6 +23,9 @@
 function main(parent, entitlements) {
   // [START cloudchannel_v1_generated_CloudChannelService_TransferEntitlements_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.transfer_entitlements_to_google.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.transfer_entitlements_to_google.js
index dea263e1eda..ca167240567 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.transfer_entitlements_to_google.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.transfer_entitlements_to_google.js
@@ -23,6 +23,9 @@
 function main(parent, entitlements) {
   // [START cloudchannel_v1_generated_CloudChannelService_TransferEntitlementsToGoogle_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.unregister_subscriber.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.unregister_subscriber.js
index 85fe725db84..45cfe161713 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.unregister_subscriber.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.unregister_subscriber.js
@@ -23,6 +23,9 @@
 function main(account, serviceAccount) {
   // [START cloudchannel_v1_generated_CloudChannelService_UnregisterSubscriber_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_channel_partner_link.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_channel_partner_link.js
index 471fdc9d45e..b21cbef5557 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_channel_partner_link.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_channel_partner_link.js
@@ -23,6 +23,9 @@
 function main(name, channelPartnerLink, updateMask) {
   // [START cloudchannel_v1_generated_CloudChannelService_UpdateChannelPartnerLink_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_channel_partner_repricing_config.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_channel_partner_repricing_config.js
index 9b4016e7138..6dfb5c06606 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_channel_partner_repricing_config.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_channel_partner_repricing_config.js
@@ -23,6 +23,9 @@
 function main(channelPartnerRepricingConfig) {
   // [START cloudchannel_v1_generated_CloudChannelService_UpdateChannelPartnerRepricingConfig_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_customer.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_customer.js
index 4283ac74397..fb7ed485b06 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_customer.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_customer.js
@@ -23,6 +23,9 @@
 function main(customer) {
   // [START cloudchannel_v1_generated_CloudChannelService_UpdateCustomer_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_customer_repricing_config.js b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_customer_repricing_config.js
index 9f21f6b4a14..becdd61604c 100644
--- a/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_customer_repricing_config.js
+++ b/packages/google-cloud-channel/samples/generated/v1/cloud_channel_service.update_customer_repricing_config.js
@@ -23,6 +23,9 @@
 function main(customerRepricingConfig) {
   // [START cloudchannel_v1_generated_CloudChannelService_UpdateCustomerRepricingConfig_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-channel/samples/generated/v1/snippet_metadata.google.cloud.channel.v1.json b/packages/google-cloud-channel/samples/generated/v1/snippet_metadata.google.cloud.channel.v1.json
index 387da0b9174..571aed5b8ff 100644
--- a/packages/google-cloud-channel/samples/generated/v1/snippet_metadata.google.cloud.channel.v1.json
+++ b/packages/google-cloud-channel/samples/generated/v1/snippet_metadata.google.cloud.channel.v1.json
@@ -22,7 +22,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 72,
+                    "end": 75,
                     "type": "FULL"
                 }
             ],
@@ -74,7 +74,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 51,
+                    "end": 54,
                     "type": "FULL"
                 }
             ],
@@ -114,7 +114,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 56,
+                    "end": 59,
                     "type": "FULL"
                 }
             ],
@@ -158,7 +158,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 56,
+                    "end": 59,
                     "type": "FULL"
                 }
             ],
@@ -202,7 +202,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 55,
+                    "end": 58,
                     "type": "FULL"
                 }
             ],
@@ -246,7 +246,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 50,
+                    "end": 53,
                     "type": "FULL"
                 }
             ],
@@ -286,7 +286,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 88,
+                    "end": 91,
                     "type": "FULL"
                 }
             ],
@@ -350,7 +350,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 64,
+                    "end": 67,
                     "type": "FULL"
                 }
             ],
@@ -402,7 +402,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 67,
+                    "end": 70,
                     "type": "FULL"
                 }
             ],
@@ -450,7 +450,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 93,
+                    "end": 96,
                     "type": "FULL"
                 }
             ],
@@ -514,7 +514,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 85,
+                    "end": 88,
                     "type": "FULL"
                 }
             ],
@@ -578,7 +578,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 52,
+                    "end": 55,
                     "type": "FULL"
                 }
             ],
@@ -618,7 +618,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 70,
+                    "end": 73,
                     "type": "FULL"
                 }
             ],
@@ -666,7 +666,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 76,
+                    "end": 79,
                     "type": "FULL"
                 }
             ],
@@ -718,7 +718,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 70,
+                    "end": 73,
                     "type": "FULL"
                 }
             ],
@@ -766,7 +766,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 80,
+                    "end": 83,
                     "type": "FULL"
                 }
             ],
@@ -822,7 +822,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 65,
+                    "end": 68,
                     "type": "FULL"
                 }
             ],
@@ -866,7 +866,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 65,
+                    "end": 68,
                     "type": "FULL"
                 }
             ],
@@ -910,7 +910,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 65,
+                    "end": 68,
                     "type": "FULL"
                 }
             ],
@@ -954,7 +954,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 65,
+                    "end": 68,
                     "type": "FULL"
                 }
             ],
@@ -998,7 +998,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 77,
+                    "end": 80,
                     "type": "FULL"
                 }
             ],
@@ -1050,7 +1050,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 70,
+                    "end": 73,
                     "type": "FULL"
                 }
             ],
@@ -1098,7 +1098,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 71,
+                    "end": 74,
                     "type": "FULL"
                 }
             ],
@@ -1150,7 +1150,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 56,
+                    "end": 59,
                     "type": "FULL"
                 }
             ],
@@ -1194,7 +1194,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 59,
+                    "end": 62,
                     "type": "FULL"
                 }
             ],
@@ -1238,7 +1238,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 65,
+                    "end": 68,
                     "type": "FULL"
                 }
             ],
@@ -1286,7 +1286,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 52,
+                    "end": 55,
                     "type": "FULL"
                 }
             ],
@@ -1326,7 +1326,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 77,
+                    "end": 80,
                     "type": "FULL"
                 }
             ],
@@ -1378,7 +1378,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 56,
+                    "end": 59,
                     "type": "FULL"
                 }
             ],
@@ -1422,7 +1422,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 50,
+                    "end": 53,
                     "type": "FULL"
                 }
             ],
@@ -1462,7 +1462,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 52,
+                    "end": 55,
                     "type": "FULL"
                 }
             ],
@@ -1502,7 +1502,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 52,
+                    "end": 55,
                     "type": "FULL"
                 }
             ],
@@ -1542,7 +1542,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 80,
+                    "end": 83,
                     "type": "FULL"
                 }
             ],
@@ -1594,7 +1594,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 57,
+                    "end": 60,
                     "type": "FULL"
                 }
             ],
@@ -1638,7 +1638,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 50,
+                    "end": 53,
                     "type": "FULL"
                 }
             ],
@@ -1678,7 +1678,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 50,
+                    "end": 53,
                     "type": "FULL"
                 }
             ],
@@ -1718,7 +1718,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 52,
+                    "end": 55,
                     "type": "FULL"
                 }
             ],
@@ -1758,7 +1758,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 69,
+                    "end": 72,
                     "type": "FULL"
                 }
             ],
@@ -1810,7 +1810,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 77,
+                    "end": 80,
                     "type": "FULL"
                 }
             ],
@@ -1866,7 +1866,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 77,
+                    "end": 80,
                     "type": "FULL"
                 }
             ],
@@ -1922,7 +1922,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 77,
+                    "end": 80,
                     "type": "FULL"
                 }
             ],
@@ -1982,7 +1982,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 77,
+                    "end": 80,
                     "type": "FULL"
                 }
             ],
@@ -2042,7 +2042,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 55,
+                    "end": 58,
                     "type": "FULL"
                 }
             ],
@@ -2086,7 +2086,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 55,
+                    "end": 58,
                     "type": "FULL"
                 }
             ],
@@ -2130,7 +2130,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 66,
+                    "end": 69,
                     "type": "FULL"
                 }
             ],
diff --git a/packages/google-cloud-channel/src/v1/cloud_channel_service_client.ts b/packages/google-cloud-channel/src/v1/cloud_channel_service_client.ts
index 33959101434..eaf9d0e22bc 100644
--- a/packages/google-cloud-channel/src/v1/cloud_channel_service_client.ts
+++ b/packages/google-cloud-channel/src/v1/cloud_channel_service_client.ts
@@ -30,7 +30,6 @@ import {
 } from 'google-gax';
 
 import {Transform} from 'stream';
-import {RequestType} from 'google-gax/build/src/apitypes';
 import * as protos from '../../protos/protos';
 import jsonProtos = require('../../protos/protos.json');
 /**
@@ -568,7 +567,8 @@ export class CloudChannelServiceClient {
       const apiCall = this._gaxModule.createApiCall(
         callPromise,
         this._defaults[methodName],
-        descriptor
+        descriptor,
+        this._opts.fallback
       );
 
       this.innerApiCalls[methodName] = apiCall;
@@ -3201,7 +3201,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.provisionCloudIdentity,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.Customer,
@@ -3389,7 +3389,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.createEntitlement,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.Entitlement,
@@ -3569,7 +3569,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.changeParameters,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.Entitlement,
@@ -3744,7 +3744,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.changeRenewalSettings,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.Entitlement,
@@ -3923,7 +3923,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.changeOffer,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.Entitlement,
@@ -4097,7 +4097,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.startPaidService,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.Entitlement,
@@ -4268,7 +4268,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.suspendEntitlement,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.Entitlement,
@@ -4444,7 +4444,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.cancelEntitlement,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.protobuf.Empty,
@@ -4621,7 +4621,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.activateEntitlement,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.Entitlement,
@@ -4807,7 +4807,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.transferEntitlements,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.cloud.channel.v1.TransferEntitlementsResponse,
@@ -4992,7 +4992,7 @@ export class CloudChannelServiceClient {
     const decodeOperation = new gax.Operation(
       operation,
       this.descriptors.longrunning.transferEntitlementsToGoogle,
-      gax.createDefaultBackoffSettings()
+      this._gaxModule.createDefaultBackoffSettings()
     );
     return decodeOperation as LROperation<
       protos.google.protobuf.Empty,
@@ -5159,7 +5159,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listCustomers.createStream(
-      this.innerApiCalls.listCustomers as gax.GaxCall,
+      this.innerApiCalls.listCustomers as GaxCall,
       request,
       callSettings
     );
@@ -5217,7 +5217,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listCustomers.asyncIterate(
       this.innerApiCalls['listCustomers'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.ICustomer>;
   }
@@ -5380,7 +5380,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listEntitlements.createStream(
-      this.innerApiCalls.listEntitlements as gax.GaxCall,
+      this.innerApiCalls.listEntitlements as GaxCall,
       request,
       callSettings
     );
@@ -5435,7 +5435,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listEntitlements.asyncIterate(
       this.innerApiCalls['listEntitlements'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.IEntitlement>;
   }
@@ -5643,7 +5643,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listTransferableSkus.createStream(
-      this.innerApiCalls.listTransferableSkus as gax.GaxCall,
+      this.innerApiCalls.listTransferableSkus as GaxCall,
       request,
       callSettings
     );
@@ -5716,7 +5716,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listTransferableSkus.asyncIterate(
       this.innerApiCalls['listTransferableSkus'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.ITransferableSku>;
   }
@@ -5910,7 +5910,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listTransferableOffers.createStream(
-      this.innerApiCalls.listTransferableOffers as gax.GaxCall,
+      this.innerApiCalls.listTransferableOffers as GaxCall,
       request,
       callSettings
     );
@@ -5974,7 +5974,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listTransferableOffers.asyncIterate(
       this.innerApiCalls['listTransferableOffers'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.ITransferableOffer>;
   }
@@ -6147,7 +6147,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listChannelPartnerLinks.createStream(
-      this.innerApiCalls.listChannelPartnerLinks as gax.GaxCall,
+      this.innerApiCalls.listChannelPartnerLinks as GaxCall,
       request,
       callSettings
     );
@@ -6204,7 +6204,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listChannelPartnerLinks.asyncIterate(
       this.innerApiCalls['listChannelPartnerLinks'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.IChannelPartnerLink>;
   }
@@ -6401,7 +6401,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listCustomerRepricingConfigs.createStream(
-      this.innerApiCalls.listCustomerRepricingConfigs as gax.GaxCall,
+      this.innerApiCalls.listCustomerRepricingConfigs as GaxCall,
       request,
       callSettings
     );
@@ -6465,7 +6465,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listCustomerRepricingConfigs.asyncIterate(
       this.innerApiCalls['listCustomerRepricingConfigs'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.ICustomerRepricingConfig>;
   }
@@ -6668,7 +6668,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listChannelPartnerRepricingConfigs.createStream(
-      this.innerApiCalls.listChannelPartnerRepricingConfigs as gax.GaxCall,
+      this.innerApiCalls.listChannelPartnerRepricingConfigs as GaxCall,
       request,
       callSettings
     );
@@ -6736,7 +6736,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listChannelPartnerRepricingConfigs.asyncIterate(
       this.innerApiCalls['listChannelPartnerRepricingConfigs'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.IChannelPartnerRepricingConfig>;
   }
@@ -6881,7 +6881,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listProducts.createStream(
-      this.innerApiCalls.listProducts as gax.GaxCall,
+      this.innerApiCalls.listProducts as GaxCall,
       request,
       callSettings
     );
@@ -6932,7 +6932,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listProducts.asyncIterate(
       this.innerApiCalls['listProducts'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.IProduct>;
   }
@@ -7093,7 +7093,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listSkus.createStream(
-      this.innerApiCalls.listSkus as gax.GaxCall,
+      this.innerApiCalls.listSkus as GaxCall,
       request,
       callSettings
     );
@@ -7153,7 +7153,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listSkus.asyncIterate(
       this.innerApiCalls['listSkus'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.ISku>;
   }
@@ -7316,7 +7316,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listOffers.createStream(
-      this.innerApiCalls.listOffers as gax.GaxCall,
+      this.innerApiCalls.listOffers as GaxCall,
       request,
       callSettings
     );
@@ -7377,7 +7377,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listOffers.asyncIterate(
       this.innerApiCalls['listOffers'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.IOffer>;
   }
@@ -7548,7 +7548,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listPurchasableSkus.createStream(
-      this.innerApiCalls.listPurchasableSkus as gax.GaxCall,
+      this.innerApiCalls.listPurchasableSkus as GaxCall,
       request,
       callSettings
     );
@@ -7607,7 +7607,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listPurchasableSkus.asyncIterate(
       this.innerApiCalls['listPurchasableSkus'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.IPurchasableSku>;
   }
@@ -7778,7 +7778,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listPurchasableOffers.createStream(
-      this.innerApiCalls.listPurchasableOffers as gax.GaxCall,
+      this.innerApiCalls.listPurchasableOffers as GaxCall,
       request,
       callSettings
     );
@@ -7837,7 +7837,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listPurchasableOffers.asyncIterate(
       this.innerApiCalls['listPurchasableOffers'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.channel.v1.IPurchasableOffer>;
   }
@@ -8008,7 +8008,7 @@ export class CloudChannelServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listSubscribers.createStream(
-      this.innerApiCalls.listSubscribers as gax.GaxCall,
+      this.innerApiCalls.listSubscribers as GaxCall,
       request,
       callSettings
     );
@@ -8063,7 +8063,7 @@ export class CloudChannelServiceClient {
     this.initialize();
     return this.descriptors.page.listSubscribers.asyncIterate(
       this.innerApiCalls['listSubscribers'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<string>;
   }
diff --git a/packages/google-cloud-channel/test/gapic_cloud_channel_service_v1.ts b/packages/google-cloud-channel/test/gapic_cloud_channel_service_v1.ts
index c30561df73d..ece777ad051 100644
--- a/packages/google-cloud-channel/test/gapic_cloud_channel_service_v1.ts
+++ b/packages/google-cloud-channel/test/gapic_cloud_channel_service_v1.ts
@@ -145,101 +145,116 @@ function stubAsyncIterationCall<ResponseType>(
 }
 
 describe('v1.CloudChannelServiceClient', () => {
-  it('has servicePath', () => {
-    const servicePath =
-      cloudchannelserviceModule.v1.CloudChannelServiceClient.servicePath;
-    assert(servicePath);
-  });
-
-  it('has apiEndpoint', () => {
-    const apiEndpoint =
-      cloudchannelserviceModule.v1.CloudChannelServiceClient.apiEndpoint;
-    assert(apiEndpoint);
-  });
-
-  it('has port', () => {
-    const port = cloudchannelserviceModule.v1.CloudChannelServiceClient.port;
-    assert(port);
-    assert(typeof port === 'number');
-  });
+  describe('Common methods', () => {
+    it('has servicePath', () => {
+      const servicePath =
+        cloudchannelserviceModule.v1.CloudChannelServiceClient.servicePath;
+      assert(servicePath);
+    });
 
-  it('should create a client with no option', () => {
-    const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient();
-    assert(client);
-  });
+    it('has apiEndpoint', () => {
+      const apiEndpoint =
+        cloudchannelserviceModule.v1.CloudChannelServiceClient.apiEndpoint;
+      assert(apiEndpoint);
+    });
 
-  it('should create a client with gRPC fallback', () => {
-    const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient({
-      fallback: true,
+    it('has port', () => {
+      const port = cloudchannelserviceModule.v1.CloudChannelServiceClient.port;
+      assert(port);
+      assert(typeof port === 'number');
     });
-    assert(client);
-  });
 
-  it('has initialize method and supports deferred initialization', async () => {
-    const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('should create a client with no option', () => {
+      const client =
+        new cloudchannelserviceModule.v1.CloudChannelServiceClient();
+      assert(client);
     });
-    assert.strictEqual(client.cloudChannelServiceStub, undefined);
-    await client.initialize();
-    assert(client.cloudChannelServiceStub);
-  });
 
-  it('has close method for the initialized client', done => {
-    const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('should create a client with gRPC fallback', () => {
+      const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient(
+        {
+          fallback: true,
+        }
+      );
+      assert(client);
     });
-    client.initialize();
-    assert(client.cloudChannelServiceStub);
-    client.close().then(() => {
-      done();
+
+    it('has initialize method and supports deferred initialization', async () => {
+      const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient(
+        {
+          credentials: {client_email: 'bogus', private_key: 'bogus'},
+          projectId: 'bogus',
+        }
+      );
+      assert.strictEqual(client.cloudChannelServiceStub, undefined);
+      await client.initialize();
+      assert(client.cloudChannelServiceStub);
     });
-  });
 
-  it('has close method for the non-initialized client', done => {
-    const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('has close method for the initialized client', done => {
+      const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient(
+        {
+          credentials: {client_email: 'bogus', private_key: 'bogus'},
+          projectId: 'bogus',
+        }
+      );
+      client.initialize();
+      assert(client.cloudChannelServiceStub);
+      client.close().then(() => {
+        done();
+      });
     });
-    assert.strictEqual(client.cloudChannelServiceStub, undefined);
-    client.close().then(() => {
-      done();
+
+    it('has close method for the non-initialized client', done => {
+      const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient(
+        {
+          credentials: {client_email: 'bogus', private_key: 'bogus'},
+          projectId: 'bogus',
+        }
+      );
+      assert.strictEqual(client.cloudChannelServiceStub, undefined);
+      client.close().then(() => {
+        done();
+      });
     });
-  });
 
-  it('has getProjectId method', async () => {
-    const fakeProjectId = 'fake-project-id';
-    const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('has getProjectId method', async () => {
+      const fakeProjectId = 'fake-project-id';
+      const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient(
+        {
+          credentials: {client_email: 'bogus', private_key: 'bogus'},
+          projectId: 'bogus',
+        }
+      );
+      client.auth.getProjectId = sinon.stub().resolves(fakeProjectId);
+      const result = await client.getProjectId();
+      assert.strictEqual(result, fakeProjectId);
+      assert((client.auth.getProjectId as SinonStub).calledWithExactly());
     });
-    client.auth.getProjectId = sinon.stub().resolves(fakeProjectId);
-    const result = await client.getProjectId();
-    assert.strictEqual(result, fakeProjectId);
-    assert((client.auth.getProjectId as SinonStub).calledWithExactly());
-  });
 
-  it('has getProjectId method with callback', async () => {
-    const fakeProjectId = 'fake-project-id';
-    const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
-    });
-    client.auth.getProjectId = sinon
-      .stub()
-      .callsArgWith(0, null, fakeProjectId);
-    const promise = new Promise((resolve, reject) => {
-      client.getProjectId((err?: Error | null, projectId?: string | null) => {
-        if (err) {
-          reject(err);
-        } else {
-          resolve(projectId);
+    it('has getProjectId method with callback', async () => {
+      const fakeProjectId = 'fake-project-id';
+      const client = new cloudchannelserviceModule.v1.CloudChannelServiceClient(
+        {
+          credentials: {client_email: 'bogus', private_key: 'bogus'},
+          projectId: 'bogus',
         }
+      );
+      client.auth.getProjectId = sinon
+        .stub()
+        .callsArgWith(0, null, fakeProjectId);
+      const promise = new Promise((resolve, reject) => {
+        client.getProjectId((err?: Error | null, projectId?: string | null) => {
+          if (err) {
+            reject(err);
+          } else {
+            resolve(projectId);
+          }
+        });
       });
+      const result = await promise;
+      assert.strictEqual(result, fakeProjectId);
     });
-    const result = await promise;
-    assert.strictEqual(result, fakeProjectId);
   });
 
   describe('getCustomer', () => {