def METHOD_NAME(self, model_list, lazy_worker_idxs, mask_func: Callable):
    new_model_list = []
    for i in range(0, len(model_list)):
        if i not in lazy_worker_idxs:
            new_model_list.append(model_list[i])
        else:
            local_sample_number, _ = model_list[i]
            previous_model_params = self.client_cache[i]
            previous_model_params = mask_func(previous_model_params)
            new_model_list.append((local_sample_number, previous_model_params))
    return new_model_list