/**
* Parse service method name, also ensure that it exists.
*
* @param string $serviceMethod
* @param string $topicName
* @return array Contains class name and method name
*/
protected function parseServiceMethod($serviceMethod, $topicName)
{
preg_match(self::SERVICE_METHOD_NAME_PATTERN, $serviceMethod, $matches);
$className = $matches[1];
$methodName = $matches[2];
$this->xmlValidator->validateServiceMethod($serviceMethod, $topicName, $className, $methodName);
return ['typeName' => $className, 'methodName' => $methodName];
}