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<?php
declare(strict_types=1);
namespace OniBus\Utility;
trait Singleton
{
protected static $instance = null;
public static function instance()
if (is_null(static::$instance)) {
self::$instance = static::singleInstance();
}
return self::$instance;
abstract protected static function singleInstance();
protected function __construct()
brenoroosevelt /
oni-bus
