code: def transform_data(self, data, request=None, response=None, context=None):
          transform = self.transform
          if hasattr(transform, 'context'):
              self.transform.context = context
          
          if transform and not (isinstance(transform, type) and isinstance(data, transform)):
              if self._params_for_transform:
                  return transform(data, **self._arguments(self._params_for_transform, request, response))
              else:
                  return transform(data)
          return data
docs: Runs the transforms specified on this endpoint with the provided data, returning the data modified