def users(self, value):
     if isinstance(value, list):
         self._users = list()
         for i in value:
             if isinstance(i, UserDetails):
                 self._users.append(i)
             else:
                 self._users.append(UserDetails.from_alipay_dict(i))
 def user(self, value):
     if isinstance(value, UserDetails):
         self._user = value
     else:
         self._user = UserDetails.from_alipay_dict(value)