code: def _prerun(self):
          
          self.check_required_params()
          self._set_status("RUNNING")
          logger.debug(
              "{}.PreRun: {}[{}]: running...".format(
                  self.__class__.__name__, self.__class__.path, self.uuid
              ),
              extra=dict(
                  kmsg=Message(
                      self.uuid, entrypoint=self.__class__.path,
                      params=self.params
                  ).dump()
              )
          )
          return self.prerun()
docs: To execute before running message