public function validate($value, Constraint $constraint)
 {
     if (!$constraint instanceof TokenEntity) {
         throw new \InvalidArgumentException('Given constraint must ne instance of TokenEntity class');
     }
     if ($value) {
         $configValidation = false;
         try {
             /** @var StorageApi $storageApi */
             $storageApi = $constraint->getStorageApi();
             $token = $storageApi->getToken($value);
             if (!$token) {
                 throw new \Exception('Token does not exists');
             }
             $userToken = new Token($storageApi);
             $configValidation = true;
             $components = new Components(new StorageApi(array('token' => $token['token'], 'url' => $storageApi->getApiUrl(), 'userAgent' => $storageApi->getUserAgent())));
             $components->listComponents(new ListConfigurationsOptions());
         } catch (\Exception $e) {
             if ($e instanceof \Keboola\StorageApi\ClientException && $e->getCode() === 403) {
                 //@FIXME jak zmenit api exception code
                 if ($configValidation) {
                     $this->context->addViolation($constraint->configMessage, array('%string%' => $value), null, null, 'TOKEN_PERMISSION');
                 } else {
                     $this->context->addViolation($constraint->permissionsMessage, array(), null, null, 'TOKEN_PERMISSION');
                 }
             } else {
                 $this->context->addViolation($constraint->message, array('%string%' => $value));
             }
             return;
         }
         //@FIXME doplnit validaci na master token!!!
     }
 }
 /**
  * @param Client $storageApi
  * @return bool
  * @throws StorageApi\InvalidStateException
  */
 private function validateToken(Client $storageApi)
 {
     try {
         $components = new Components($storageApi);
         $components->listComponents(new ListConfigurationsOptions());
     } catch (ClientException $e) {
         if ($e->getCode() == 403) {
             throw new StorageApi\InvalidStateException('Token has no permission to read configuration');
         } else {
             throw new StorageApi\InvalidStateException($e->getMessage());
         }
     }
     return true;
 }