Adds support for proper requestBody examples. Adds mechanism to allow for adding additional ways to add request body examples

Can add externalValue or  it will work and produce valid swagger spec.

The Symbol name matching the let parameter is always required

test-app/spec/integration/blogs_spec.rb

@@ -80,6 +80,32 @@ describe 'Blogs API', type: :request, swagger_doc: 'v1/swagger.json' do
     end
   end
 
+  path '/blogs/alternate' do
+    post 'Creates a blog - different :examples in requestBody' do
+      tags 'Blogs'
+      description 'Creates a new blog from provided data'
+      operationId 'createAlternateBlog'
+      consumes 'application/json'
+      produces 'application/json'
+
+      # NOTE: the externalValue: http://... is valid 3.0 spec, but swagger-UI does NOT support it yet
+      # https://github.com/swagger-api/swagger-ui/issues/5433
+      request_body_json schema: { '$ref' => '#/components/schemas/blog' },
+                        examples: [:blog, {name: :external_blog,
+                                           externalValue: 'http://api.sample.org/myjson_example'},
+                                          {name: :another_example,
+                                           '$ref' => '#/components/examples/flexible_blog_example'}]
+
+      let(:blog) { { blog: { title: 'alt title', content: 'alt bar' } } }
+
+      response '201', 'blog created' do
+        schema '$ref' => '#/components/schemas/blog'
+        run_test!
+      end
+    end
+  end
+
+
 
   path '/blogs/{id}' do