code: def get_stage(self, stage, **kwargs):
          '''
          :param stage: A number for the stage index (for the nth stage, starting from 0), or a string of the stage index, name, or ID
          :type stage: int or string
          :returns: Hash of stage descriptor in workflow
          '''
          stage_id = self._get_stage_id(stage)
          result = next((stage for stage in self.stages if stage['id'] == stage_id), None)
          if result is None:
              raise DXError('The stage ID ' + stage_id + ' could not be found')
          return resulf get_stage(self, stage, **kwargs):
          '''
          :param stage: A number for the stage index (for the nth stage, starting from 0), or a string of the stage index, name, or ID
          :type stage: int or string
          :returns: Hash of stage descriptor in workflow
          '''
          stage_id = self._get_stage_id(stage)
          result = next((stage for stage in self.stages if stage['id'] == stage_id), None)
          if result is None:
              raise DXError('The stage ID ' + stage_id + ' could not be found')
          return result
docs: :param stage: A number for the stage index (for the nth stage, starting from 0), or a string of the stage index, name, or ID
          :type stage: int or string
          :returns: Hash of stage descriptor in workflow