Updated nGraph custom op documentation

docs/IE_DG/Extensibility_DG/AddingNGraphOps.md

@@ -6,7 +6,7 @@ Inference Engine Extension API allows to register operation sets (opsets) with c
 
 To add your custom nGraph operation, create a new class that extends `ngraph::Op`, which is in turn derived from `ngraph::Node`, the base class for all graph operations in nGraph. Follow the steps below:
 
-1. Define a `NodeTypeInfo` object that identifies the type of the operation to the graph users and helps with dynamic type resolution. The type info of an nGraph operation currently consists of a string identifier and a version number, but this may change in the future.
+1. Add the `NGRAPH_RTTI_DECLARATION` and `NGRAPH_RTTI_DEFINITION` macros that define a `NodeTypeInfo` object that identifies the type of the operation to the graph users and helps with dynamic type resolution. The type info of an nGraph operation currently consists of a string identifier and a version number, but this may change in the future.
 
 2. Implement constructors that can optionally take the operation inputs and attributes as parameters. 
 

docs/template_extension/op.cpp

@@ -5,9 +5,9 @@
 
 using namespace TemplateExtension;
 
-constexpr ngraph::NodeTypeInfo Operation::type_info;
-
 //! [op:ctor]
+NGRAPH_RTTI_DEFINITION(TemplateExtension::Operation, "Template", 0);
+
 Operation::Operation(const ngraph::Output<ngraph::Node> &arg, int64_t add) : Op({arg}), add(add) {
     constructor_validate_and_infer_types();
 }

docs/template_extension/op.hpp

@@ -11,8 +11,7 @@ namespace TemplateExtension {
 
 class Operation : public ngraph::op::Op {
 public:
-    static constexpr ngraph::NodeTypeInfo type_info{"Template", 0};
-    const ngraph::NodeTypeInfo& get_type_info() const override { return type_info;  }
+    NGRAPH_RTTI_DECLARATION;
 
     Operation() = default;
     Operation(const ngraph::Output<ngraph::Node>& arg, int64_t add);