code: public Object invokeOperation(ObjectName name, String operName, String... paramStrings) throws Exception {
  		String[] paramTypes = lookupParamTypes(name, operName, paramStrings);
  		Object[] paramObjs;
  		if (paramStrings.length == 0) {
  			paramObjs = null;
  		} else {
  			paramObjs = new Object[paramStrings.length];
  			for (int i = 0; i < paramStrings.length; i++) {
  				paramObjs[i] = ClientUtils.stringToParam(paramStrings[i], paramTypes[i]);
  			}
  		}
  		return invokeOperation(name, operName, paramTypes, paramObjs);
  	}
docs: Invoke a JMX method as an array of parameter strings.
  
  @return The value returned by the method or null if none.