code: def execute(self, result=None):
          
          try:
              return self.unsafe_execute(result=result)
          except Exception as exc:
              return self._onerror(Result.from_exception(exc, uuid=self.uuid))
docs: Execution 'wrapper' to make sure that it return a result
  
          :return: Execution result
          :rtype: kser.result.Result