Model::deleteInternal

protected function deleteInternal()
{
	$this->errorCollection->clear();

	/** @var DataManager $tableClassName */
	$tableClassName = static::getTableClassName();
	$deleteResult = $tableClassName::delete($this->id);
	if(!$deleteResult->isSuccess())
	{
		$this->errorCollection->add(array(new Error('', self::ERROR_INTERNAL_DELETE)));
		return false;
	}

	return true;
}