code: private static Object getExamplesFromBodyParameter(Parameter parameter) {
          Object examples = ((BodyParameter) parameter).getExamples();
          if (examples == null) {
              examples = parameter.getVendorExtensions().get("x-examples");
          }
          return examples;
      }
docs: Retrieves example payloads for body parameter either from examples or from vendor extensions.
  @param parameter parameter to get the examples for
  @return examples if found otherwise null