code: @Override
      public DeleteFunctionDefinitionResult deleteFunctionDefinition(DeleteFunctionDefinitionRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteFunctionDefinition(request);
      }
docs: Deletes a Lambda function definition.
  
  @param deleteFunctionDefinitionRequest
  @return Result of the DeleteFunctionDefinition operation returned by the service.
  @throws BadRequestException
  invalid request
  @sample AWSGreengrass.DeleteFunctionDefinition
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/greengrass-2017-06-07/DeleteFunctionDefinition"
  target="_top">AWS API Documentation</a>