def _format_pep_8(camel_case_name: str) -> str:
    """
    Helper that creates a pep8_compliant_method_name
    from a given camelCaseMethodName.
    """
    return camel_case_name[0].lower() + "".join(
        f"_{letter.lower()}" if letter.isupper() else letter.lower()
        for letter in camel_case_name[1:]
    )