code: def configure_upload(self, ns, definition):
          
          upload = self.create_upload_func(ns, definition, ns.collection_path, Operation.Upload)
          upload.__doc__ = "Upload a {}".format(ns.subject_name)
docs: Register an upload endpoint.
  
          The definition's func should be an upload function, which must:
          - accept kwargs for path data and query string parameters
          - accept a list of tuples of the form (formname, tempfilepath, filename)
          - optionally return a resource
  
          :param ns: the namespace
          :param definition: the endpoint definition