builder.instanceListenerTypes(instanceListeners.toArray(new Class[]{}));
}
// optional: concurrency
String concurrencyMode = (String) properties.get(XOUnitParameter.CONCURRENCY_MODE.getKey());
builder.concurrencyMode(concurrencyMode);
// optional: validation
String validationMode = (String) properties.get(XOUnitParameter.VALIDATION_MODE.getKey());
builder.validationMode(validationMode);