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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 generate_conf_file(argv: List[str]) -> bool: """ Convert a set of FHIR resources into their corresponding i2b2 counterparts. :param argv: Command line arguments. See: create_parser for details :return: """

    parser = ArgumentParser(description="Generate SQL db_conf file template")
    parser.add_argument("-f", "--configfile", help="File name to generate (Default: db_conf)", metavar="Config File",
                        default="db_conf")
    opts = parser.parse_args(argv)
    if os.path.exists(opts.configfile):
        print(f"{opts.configfile} already exists!")
        return False
    with open(opts.configfile, 'w') as f:
        f.write(conf_template)
    print(f"{opts.configfile} generated")
    return True