
def func_a():
    """
    Does nothing...

    :return:
    :rtype: string
    """
    return 'a'


def func_b():
    """
    Not very useful, but...

    :return:
    :rtype: string
    """
    return 'b'


def func_c():
    """
    May be improved in the future...

    :return:
    :rtype: string
    """
    return 'c'
