Extra links supported for operators coming from third-party packages:

airflow.serialization.serialized_objects.BUILTIN_OPERATOR_EXTRA_LINKS

airflow/cli/cli_parser.py
name='db',
        help="Database operations",
        subcommands=DB_COMMANDS,
    ),
    ActionCommand(
        name='kerberos',
        help="Start a kerberos ticket renewer",
        func=lazy_load_command('airflow.cli.commands.kerberos_command.kerberos'),
        args=(ARG_PRINCIPAL, ARG_KEYTAB, ARG_PID, ARG_DAEMON, ARG_STDOUT, ARG_STDERR, ARG_LOG_FILE),
    ),
    ActionCommand(
        name='webserver',
        help="Start a Airflow webserver instance",
        func=lazy_load_command('airflow.cli.commands.webserver_command.webserver'),
        args=(
            ARG_PORT,
            ARG_WORKERS,
            ARG_WORKERCLASS,
            ARG_WORKER_TIMEOUT,
            ARG_HOSTNAME,
            ARG_PID,
            ARG_DAEMON,
            ARG_STDOUT,
            ARG_STDERR,
            ARG_ACCESS_LOGFILE,
            ARG_ERROR_LOGFILE,
            ARG_ACCESS_LOGFORMAT,
            ARG_LOG_FILE,
            ARG_SSL_CERT,
            ARG_SSL_KEY,