def METHOD_NAME(self, raw_client_grad_list):
    ret_feature_vector_list = []
    for idx in range(len(raw_client_grad_list)):
        raw_grad = raw_client_grad_list[idx]
        (p, grad) = raw_grad
        feature_vector = self._get_importance_feature_of_a_model(grad)
        ret_feature_vector_list.append(feature_vector)
    return ret_feature_vector_list