static public function templateProcessingImpactedVariables(TemplateProcessing $templateProcessing)
    {
        $identifiers = array();
        $classNames = array(
            'setTemplateValue',
            'setCorrectResponse',
            'setDefaultValue'
        );
        
        $iterator = $templateProcessing->getComponentsByClassName($classNames);
        
        foreach ($iterator as $templateRule) {
            $identifiers[] = $templateRule->getIdentifier();
        }
        
        return array_unique($identifiers);
    }