wp_maybe_load_widgets()

Source

 * Determines if Widgets library should be loaded.
 *
 * Checks to make sure that the widgets library hasn't already been loaded.
 * If it hasn't, then it will load the widgets library and run an action hook.
 *
 * @since 2.2.0
 */
function wp_maybe_load_widgets() {
	/**
	 * Filters whether to load the Widgets library.
	 *
	 * Returning a falsey value from the filter will effectively short-circuit
	 * the Widgets library from loading.
	 *
	 * @since 2.8.0
	 *
	 * @param bool $wp_maybe_load_widgets Whether to load the Widgets library.
	 *                                    Default true.
	 */
	if ( ! apply_filters( 'load_default_widgets', true ) ) {

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