Log debug message in Xcode's Devices Console

Hi, I was wondering how to make debug.log messages to appear on the Xcode's Devices Console Log (Not the one in the main XCode window). I don't quite understand whether I should use [Application.logMessageReceived][1] or not. The example doesn't say what happens when you pass a function to it. Does that even help? Thanks. [1]: http://docs.unity3d.com/ScriptReference/Application-logMessageReceived.html