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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 load_fixture(fixture_path: str, fixture_key: str, """ Loads a specific fixture from a fixture file, optionally passing it through a normalization function. """

    file_fixtures = load_json_fixture(fixture_path)
    fixture = normalize_fn(file_fixtures[fixture_key])
    return fixture