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Editing: trait-singleton.php
<?php /** * Singleton trait. * * @package wp-job-manager-alerts */ namespace WP_Job_Manager; if ( ! defined( 'ABSPATH' ) ) { exit; // Exit if accessed directly. } trait Singleton { /** * The single instance of the class. * * @var self */ private static $instance = null; /** * Allows for accessing single instance of class. Class should only be constructed once per call. * * @since 2.2.0 * @static * @return self Main instance. */ public static function instance() { if ( is_null( self::$instance ) ) { self::$instance = new self(); } return self::$instance; } }
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