Adding notice file.

NOTICE

@@ -0,0 +1 @@
+This code was adapted from the OpenSearch User Behavior Insights plugin at https://github.com/opensearch-proj/user-behavior-insights) under the Apache License, version 2.

src/main/java/com/o19s/ubi/UbiActionFilter.java

@@ -156,16 +156,13 @@ private ActionResponse handleSearchRequest(final SearchRequest searchRequest, Ac
 
                 final SearchResponse searchResponse = (SearchResponse) response;
 
-
-                System.out.println(searchResponse.getProfileResults());
-
                 response = new UbiSearchResponse(
                         searchResponse.getHits(),
                         searchResponse.getAggregations(),
                         searchResponse.getSuggest(),
                         searchResponse.isTimedOut(),
                         searchResponse.isTerminatedEarly(),
-                        null,            // TODO: Where is this value?
+                        null,            // TODO: How to get the value for `profileResults`?
                         searchResponse.getNumReducePhases(),
                         searchResponse.getScrollId(),
                         searchResponse.getTotalShards(),

src/main/java/com/o19s/ubi/UbiSearchResponse.java

@@ -62,15 +62,13 @@ public UbiSearchResponse(
     @Override
     public XContentBuilder headerToXContent(XContentBuilder builder, ToXContent.Params params) throws IOException {
 
-        //builder.startObject();
         innerToXContentChunked(params);
 
         builder.startObject(EXT_SECTION_NAME);
         builder.startObject(UbiParametersExtBuilder.UBI_PARAMETER_NAME);
         builder.field(UBI_QUERY_ID_FIELD_NAME, this.queryId);
         builder.endObject();
         builder.endObject();
-        //builder.endObject();
 
         return builder;