ConfigurationBuilder::withProperties should not overwrite the transactionMode

      if (transactionMode != null) {
         config.transaction().transactionMode(TransactionMode.valueOf(transactionMode));
      }      

      config.maxRetries(maxRetries).socketTimeout(connectionTimeout).connectionTimeout(connectionTimeout);      

      if (propertiesPath != null) {
         Properties p = new Properties();
         try (Reader r = new FileReader(propertiesPath)) {
            p.load(r);
            config.withProperties(p);
         } catch (IOException e) {
            throw new IllegalStateException("Something went wrong with provided properties file:" + propertiesPath, e);
         }
      }
      return config;
   }

infinispan.client.hotrod.auth_username=admin
infinispan.client.hotrod.auth_password=password
infinispan.client.hotrod.auth_realm=default
infinispan.client.hotrod.sasl_mechanism=SCRAM-SHA-512