params-33944.php

wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance, $this ) );

// $nav_menu_args
Array
(
    [fallback_cb] => 
    [menu] => stdClass Object
        (
            [term_id] => 176
            [name] => Short
            [slug] => short
            [term_group] => 0
            [term_taxonomy_id] => 177
            [taxonomy] => nav_menu
            [description] => 
            [parent] => 0
            [count] => 3
            [filter] => raw
        )

)

// $nav_menu
stdClass Object
(
    [term_id] => 176
    [name] => Short
    [slug] => short
    [term_group] => 0
    [term_taxonomy_id] => 177
    [taxonomy] => nav_menu
    [description] => 
    [parent] => 0
    [count] => 3
    [filter] => raw
)

// $args
Array
(
    [name] => Widget Area
    [id] => sidebar-1
    [description] => Add widgets here to appear in your sidebar.
    [class] => 
    [before_widget] => <aside id="nav_menu-2" class="widget widget_nav_menu">
    [after_widget] => </aside>
    [before_title] => <h2 class="widget-title">
    [after_title] => </h2>
    [widget_id] => nav_menu-2
    [widget_name] => Custom Menu
)

// $instance
Array
(
    [title] => Navigation
    [nav_menu] => 176
)

// $this
WP_Nav_Menu_Widget Object
(
    [id_base] => nav_menu
    [name] => Custom Menu
    [widget_options] => Array
        (
            [classname] => widget_nav_menu
            [description] => Add a custom menu to your sidebar.
        )

    [control_options] => Array
        (
            [id_base] => nav_menu
        )

    [number] => 2
    [id] => nav_menu-2
    [updated] => 
    [option_name] => widget_nav_menu
)