Neos\Flow\Validation\ValidatorResolver::getBaseValidatorConjunction PHP Method

    public function getBaseValidatorConjunction($targetClassName, array $validationGroups = ['Default'])
    {
        $targetClassName = trim($targetClassName, ' \\');
        $indexKey = $targetClassName . '##' . implode('##', $validationGroups);
        if (!array_key_exists($indexKey, $this->baseValidatorConjunctions)) {
            $this->buildBaseValidatorConjunction($indexKey, $targetClassName, $validationGroups);
        }
        return $this->baseValidatorConjunctions[$indexKey];
    }

 /**
  * Add a domain record
  *
  * @param string $siteNodeName The nodeName of the site rootNode, e.g. "neostypo3org"
  * @param string $hostname The hostname to match on, e.g. "flow.neos.io"
  * @param string $scheme The scheme for linking (http/https)
  * @param integer $port The port for linking (0-49151)
  * @return void
  */
 public function addCommand($siteNodeName, $hostname, $scheme = null, $port = null)
 {
     $site = $this->siteRepository->findOneByNodeName($siteNodeName);
     if (!$site instanceof Site) {
         $this->outputLine('<error>No site found with nodeName "%s".</error>', [$siteNodeName]);
         $this->quit(1);
     }
     $domains = $this->domainRepository->findByHostname($hostname);
     if ($domains->count() > 0) {
         $this->outputLine('<error>The host name "%s" is not unique.</error>', [$hostname]);
         $this->quit(1);
     }
     $domain = new Domain();
     if ($scheme !== null) {
         $domain->setScheme($scheme);
     }
     if ($port !== null) {
         $domain->setPort($port);
     }
     $domain->setSite($site);
     $domain->setHostname($hostname);
     $domainValidator = $this->validatorResolver->getBaseValidatorConjunction(Domain::class);
     $result = $domainValidator->validate($domain);
     if ($result->hasErrors()) {
         foreach ($result->getFlattenedErrors() as $propertyName => $errors) {
             $firstError = array_pop($errors);
             $this->outputLine('<error>Validation failed for "' . $propertyName . '": ' . $firstError . '</error>');
             $this->quit(1);
         }
     }
     $this->domainRepository->add($domain);
     $this->outputLine('Domain entry created.');
 }