/**
* We use a checksum of the template source as the template identifier
*
* @param string $actionName
* @return string
*/
protected function getTemplateIdentifier($actionName = NULL)
{
$hasMethodOnParent = TRUE === method_exists(get_parent_class($this), __FUNCTION__);
$templateFileExists = TRUE === file_exists($this->templatePathAndFilename);
return TRUE === $hasMethodOnParent && TRUE === $templateFileExists ? parent::getTemplateIdentifier($actionName) : 'viewhelpertest_' . sha1($this->templateSource);
}
