code: protected static function loadNonceBase($handlerParams)
      {
          if (empty($handlerParams->authParams->nonceBase)) {
              $handlerParams->authParams->nonceBase = SomewhatRandomGenerator::generateSomewhatRandomString();
          }
  
          return $handlerParams;
      }
docs: Get the NONCE base to be used when generating somewhat random nonce strings
  
  From the NONCE base file, or fallback is a new somewhat random string each instantiation.
  
  @param SessionHandlerParams $handlerParams
  @return SessionHandlerParams