CheckModule::onBeforeAction

public function onBeforeAction(Event $event)
{
	foreach($this->action->getArguments() as $name => $argument)
	{
		if($argument instanceof Template)
		{
			if($argument->MODULE_ID !== \Bitrix\Crm\Controller\DocumentGenerator\Base::MODULE_ID)
			{
				$this->errorCollection[] = new Error(
					'Template not found'
				);
				return new EventResult(EventResult::ERROR, null, null, $this);
			}
		}
		elseif($argument instanceof \Bitrix\DocumentGenerator\Document)
		{
			$template = $argument->getTemplate();
			if($template && $template->MODULE_ID !== \Bitrix\Crm\Controller\DocumentGenerator\Base::MODULE_ID)
			{
				$this->errorCollection[] = new Error(
					'Document not found'
				);
				return new EventResult(EventResult::ERROR, null, null, $this);
			}
		}
	}

	return null;
}