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<?php
/**
* Singleton class trait.
*
* @package WooCommerce\Utilities
*/
namespace Automattic\WooCommerce\RestApi\Utilities;
/**
* Singleton trait.
*/
trait SingletonTrait {
/**
* The single instance of the class.
*
* @var object
*/
protected static $instance = null;
/**
* Constructor
*
* @return void
*/
protected function __construct() {}
/**
* Get class instance.
*
* @return object Instance.
*/
final public static function instance() {
if ( null === static::$instance ) {
static::$instance = new static();
}
return static::$instance;
}
/**
* Prevent cloning.
*/
private function __clone() {}
/**
* Prevent unserializing.
*/
final public function __wakeup() {
wc_doing_it_wrong( __FUNCTION__, __( 'Unserializing instances of this class is forbidden.', 'woocommerce' ), '4.6' );
die();
}
}