Persister.php

<?php
 
namespace Bitrix\Bizproc\Debugger\Workflow;
 
class Persister extends \CBPWorkflowPersister
{
    private static $debugInstance = null;
 
    public static function getPersister(): self
    {
        if (!isset(static::$debugInstance))
        {
            static::$debugInstance = new static();
        }
 
        return static::$debugInstance;
    }
}