code: def invoke_lambda_function( self,
                                  function_name,
                                  payload,
                                  invocation_type='Event',
                                  log_type='Tail',
                                  client_context=None,
                                  qualifier=None
                              ):
          
          return self.lambda_client.invoke(
              FunctionName=function_name,
              InvocationType=invocation_type,
              LogType=log_type,
              Payload=payload
          )
docs: Directly invoke a named Lambda function with a payload.
          Returns the response.