docs: def _from_dict(cls, _dict):
          """Initialize a TableReturn object from a json dictionary."""
          args = {}
          if 'document' in _dict:
              args['document'] = DocInfo._from_dict(_dict.get('document'))
          if 'model_id' in _dict:
              args['model_id'] = _dict.get('model_id')
          if 'model_version' in _dict:
              args['model_version'] = _dict.get('model_version')
          if 'tables' in _dict:
              args['tables'] = [
                  Tables._from_dict(x) for x in (_dict.get('tables'))
              ]
          return cls(**args)