docs: public static <T> T invokeGetter(Object obj, String propertyName) {
  		Method method = getGetterMethod(obj.getClass(), propertyName);
  		if (method == null) {
  			throw new IllegalArgumentException(
  					"Could not find getter method [" + propertyName + "] on target [" + obj + ']');
  		}
  		return invokeMethod(obj, method);
  	}