code: @Override
      public PutMethodResult putMethod(PutMethodRequest request) {
          request = beforeClientExecution(request);
          return executePutMethod(request);
      }
docs: <p>
  Add a method to an existing <a>Resource</a> resource.
  </p>
  
  @param putMethodRequest
  Request to add a method to an existing <a>Resource</a> resource.
  @return Result of the PutMethod operation returned by the service.
  @throws BadRequestException
  The submitted request is not valid, for example, the input is incomplete or incorrect. See the
  accompanying error message for details.
  @throws UnauthorizedException
  The request is denied because the caller has insufficient permissions.
  @throws NotFoundException
  The requested resource is not found. Make sure that the request URI is correct.
  @throws ConflictException
  The request configuration has conflicts. For details, see the accompanying error message.
  @throws LimitExceededException
  The request exceeded the rate limit. Retry after the specified time period.
  @throws TooManyRequestsException
  The request has reached its throttling limit. Retry after the specified time period.
  @sample AmazonApiGateway.PutMethod