return

    if isinstance(values, list):
      vals, tys = zip(*values)
    else:
      vals = values[0]
      tys = values[1]

    if isinstance(tys, list) or isinstance(tys, tuple):
      tys = [str(t) for t in tys]
      self._emit_with_loc('{} : {}'.format(', '.join(vals), ', '.join(tys)),
                          node)
    elif tys != TFRTypes.NONE: