def METHOD_NAME(self, *args, **kwargs):
    """
    Apple requires to set `response_mode` to `form_post` if `scope`
    parameter is passed.
    """
    params = super().METHOD_NAME(*args, **kwargs)
    if self.RESPONSE_MODE:
        params["response_mode"] = self.RESPONSE_MODE
    elif self.get_scope():
        params["response_mode"] = "form_post"
    return params