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Edit File: get-instance.php

<?php /** * Trait. * * @package modern-cart */ namespace ModernCart\Inc\Traits; /** * Trait Get_Instance. */ trait Get_Instance { /** * Instance object. * * @var self|null */ private static $instance; /** * Initiator * * @since 0.0.1 * @return self initialized object of class. */ public static function get_instance() { if ( is_null( self::$instance ) ) { self::$instance = new self(); } return self::$instance; } }