WP_Customize_Nav_Menus::customize_dynamic_partial_args( array|false $partial_args, string $partial_id ): array

Source

public function customize_dynamic_partial_args( $partial_args, $partial_id ) {

	if ( preg_match( '/^nav_menu_instance\[[0-9a-f]{32}\]$/', $partial_id ) ) {
		if ( false === $partial_args ) {
			$partial_args = array();
		}
		$partial_args = array_merge(
			$partial_args,
			array(
				'type'                => 'nav_menu_instance',
				'render_callback'     => array( $this, 'render_nav_menu_partial' ),
				'container_inclusive' => true,
				'settings'            => array(), // Empty because the nav menu instance may relate to a menu or a location.
				'capability'          => 'edit_theme_options',
			)
		);
	}

	return $partial_args;
}

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