wp-includes/class-wp-customize-widgets.php:669Calls admin_print_styles-widgets.php and admin_print_styles hooks to allow custom styles from plugins.
2 hooks fire while WP_Customize_Widgets::print_styles() runs, in this order:
Fires when styles are printed for all admin pages.
public function print_styles() { /** This action is documented in wp-admin/admin-header.php */ do_action( 'admin_print_styles-widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores /** This action is documented in wp-admin/admin-header.php */ do_action( 'admin_print_styles' ); }Introduced in 3.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-widgets.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.