code: public Object invokeOperation(ObjectName objectName, String operName, Object... params) throws Exception {
  		String[] paramTypes = lookupParamTypes(objectName, operName, params);
  		return invokeOperation(objectName, operName, paramTypes, params);
  	}
docs: Invoke a JMX method as an array of objects.
  
  @return The value returned by the method or null if none.