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

airflow.serialization.serialized_objects.BUILTIN_OPERATOR_EXTRA_LINKS

airflow/cli/cli_parser.py
args=(ARG_CONN_ID, ARG_COLOR, ARG_OUTPUT),
    ),
    ActionCommand(
        name='list',
        help='List connections',
        func=lazy_load_command('airflow.cli.commands.connection_command.connections_list'),
        args=(ARG_OUTPUT, ARG_CONN_ID_FILTER),
    ),
    ActionCommand(
        name='add',
        help='Add a connection',
        func=lazy_load_command('airflow.cli.commands.connection_command.connections_add'),
        args=(ARG_CONN_ID, ARG_CONN_URI, ARG_CONN_EXTRA) + tuple(ALTERNATIVE_CONN_SPECS_ARGS),
    ),
    ActionCommand(
        name='delete',
        help='Delete a connection',
        func=lazy_load_command('airflow.cli.commands.connection_command.connections_delete'),
        args=(ARG_CONN_ID, ARG_COLOR),
    ),
    ActionCommand(
        name='export',
        help='Export all connections',
        description=(
            "All connections can be exported in STDOUT using the following command:\n"
            "airflow connections export -\n"
            "The file format can be determined by the provided file extension. eg, The following "
            "command will export the connections in JSON format:\n"
            "airflow connections export /tmp/connections.json\n"
            "The --format parameter can be used to mention the connections format. eg, "