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

airflow.serialization.serialized_objects.BUILTIN_OPERATOR_EXTRA_LINKS

airflow/cli/cli_parser.py
"the default format is JSON in STDOUT mode, which can be overridden using: \n"
            "airflow connections export - --format yaml\n"
            "The --format parameter can also be used for the files, for example:\n"
            "airflow connections export /tmp/connections --format json\n"
        ),
        func=lazy_load_command('airflow.cli.commands.connection_command.connections_export'),
        args=(
            ARG_CONN_EXPORT,
            ARG_CONN_EXPORT_FORMAT,
        ),
    ),
)
PROVIDERS_COMMANDS = (
    ActionCommand(
        name='hooks',
        help='List registered provider hooks',
        func=lazy_load_command('airflow.cli.commands.provider_command.hooks_list'),
        args=(ARG_OUTPUT,),
    ),
    ActionCommand(
        name='list',
        help='List installed providers',
        func=lazy_load_command('airflow.cli.commands.provider_command.providers_list'),
        args=(ARG_OUTPUT,),
    ),
    ActionCommand(
        name='get',
        help='Get detailed information about a provider',
        func=lazy_load_command('airflow.cli.commands.provider_command.provider_get'),
        args=(ARG_OUTPUT, ARG_FULL, ARG_COLOR, ARG_PROVIDER_NAME),