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filter is not described

customize_nav_menu_available_items filter-hook . WP 4.3.0

Filters the available menu items.

Usage

add_filter( 'customize_nav_menu_available_items', 'filter_function_name_2614', 10, 4 );
function filter_function_name_2614( $items, $type, $object, $page ){
	// filter...

	return $items;
}
$items(array)
The array of menu items.
$type(string)
The object type.
$object(string)
The object name.
$page(int)
The current page number.

Where the hook is called

WP_Customize_Nav_Menus::load_available_items_query()
wp-includes/class-wp-customize-nav-menus.php 246
$items = apply_filters( 'customize_nav_menu_available_items', $items, $type, $object, $page );

Where the hook is used (in WP core)

Does not used.