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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_fixtures_file_hash(all_fixture_paths: Iterable[str]) -> str: """ Returns the MD5 hash of the fixture files. Used for cache busting. """

    hasher = hashlib.md5()
    for fixture_path in sorted(all_fixture_paths):
        with open(fixture_path, 'rb') as fixture_file:
            hasher.update(fixture_file.read())
    return hasher.hexdigest()