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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_usage_text(parser, indent=None):
 """ This small helper function extracts the help information from an ArgumentParser instance and indents the text by the number of spaces supplied in the indent-argument. :param parser: ArgumentParser object. :param indent: Number of spaces to put before each line or None. :return: Formatted help string of the supplied parser. """

    usage_text = StringIO()
    parser.print_help(usage_text)

    usage_string = usage_text.getvalue()

    if indent is None:
        return usage_string

    return '\n'.join([' ' * indent + line for line in usage_string.split('\n')])