public function validate($value, Constraint $constraint)
 {
     if (!$constraint instanceof OrchestrationOrConfigEntity) {
         throw new \InvalidArgumentException('Given constraint must ne instance of OrchestrationOrConfigEntity class');
     }
     // orchestration exists
     try {
         $orchestrationId = $constraint->parseOrchestrationId($value);
         if (!$orchestrationId) {
             throw new \Exception('Orchestration does not exists');
         }
         $value = $orchestrationId;
         $orchestration = $constraint->getOrchestrationManager()->findOrchestrationById($value, $constraint->getToken(), true);
         if (!$orchestration) {
             throw new \Exception('Orchestration does not exists');
         }
     } catch (\Exception $e) {
         $this->context->addViolation($constraint->message, array('%string%' => $value));
         return;
     }
 }