docs: def add(self, auth, method, args, notimeout=False):
          """Append a deferred request for a particular auth/CIK."""
          authstr = self._authstr(auth)
          self._requests.setdefault(authstr, []).append((method, args))
          self._notimeouts.setdefault(authstr, False)
          if notimeout:
              self._notimeouts[authstr] = notimeout