docs: def _to_dict(self):
          """Return a json dictionary representing this model."""
          _dict = {}
          if hasattr(self,
                     'customization_id') and self.customization_id is not None:
              _dict['customization_id'] = self.customization_id
          if hasattr(self, 'created') and self.created is not None:
              _dict['created'] = self.created
          if hasattr(self, 'language') and self.language is not None:
              _dict['language'] = self.language
          if hasattr(self, 'versions') and self.versions is not None:
              _dict['versions'] = self.versions
          if hasattr(self, 'owner') and self.owner is not None:
              _dict['owner'] = self.owner
          if hasattr(self, 'name') and self.name is not None:
              _dict['name'] = self.name
          if hasattr(self, 'description') and self.description is not None:
              _dict['description'] = self.description
          if hasattr(self,
                     'base_model_name') and self.base_model_name is not None:
              _dict['base_model_name'] = self.base_model_name
          if hasattr(self, 'status') and self.status is not None:
              _dict['status'] = self.status
          if hasattr(self, 'progress') and self.progress is not None:
              _dict['progress'] = self.progress
          if hasattr(self, 'warnings') and self.warnings is not None:
              _dict['warnings'] = self.warnings
          return _dict