<commit_before>class Writer(object):
    # interface

    def write_received_file(self, received_file):
        raise Exception("Interface member not implemented")<commit_msg>R fixed header for Writer<commit_after>class Writer(object):
    # interface

    def write_received_file(self, received_file: str) -> str:
        raise Exception("Interface member not implemented")
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{'dir': 'git-commits-cleaned', 'id': '3922761', 'n_tokens_mistral': 98, 'n_tokens_neox': 93, 'n_words': 27}