protected function callSnippetsInternal(array $source, $from)
{
$connection = $this->getConnection();
$match = $this->match;
if ($match === null) {
throw new InvalidCallException('Unable to call snippets: "' . $this->className() . '::match" should be specified.');
}
return $connection->createCommand()->callSnippets($from, $source, $match, $this->snippetOptions)->queryColumn();
}