PropertiesDialog::__toString: Bitrix method

      
<?php 
//  Bitrix\Bizproc\Activity\PropertiesDialog :: __toString()
//  /dist/bitrix/modules/bizproc/lib/activity/propertiesdialog.php:402

    public function __toString()
    {
        if ($this->renderer !== null)
        {
            return call_user_func($this->renderer, $this);
        }

        $runtime = \CBPRuntime::getRuntime();
        $runtime->startRuntime();

        return (string)$runtime->executeResourceFile(
            $this->activityFile,
            $this->dialogFileName,
            array_merge(array(
                'dialog' => $this,
                //compatible parameters
                'arCurrentValues' => $this->getCurrentValues($this->dialogFileName === 'properties_dialog.php'),
                'formName' => $this->getFormName()
                ), $this->getRuntimeData()
            )
        );
    }