public function hook() {
		$transients = $this->get_transients();

		foreach ( $transients as $slug => $transient ) {
			list( $html, $args, $expire ) = $transient;
			if ( $expire < time() ) {
				continue;
			}
			$this->register( $slug, $html, $args );
		}

		foreach ( $this->notices as $notice ) {
			if ( $notice->dismiss && $this->has_user_dimissed( $notice->slug ) ) {
				continue;
			}

			if (
				! empty( $notice->active_callback )
				&& is_callable( $notice->active_callback )
				&& false == call_user_func( $notice->active_callback )
			) {
				continue;
			}

			add_action( $notice->action, $notice->callback, $notice->priority );
		}
	}