OOP in TorqueScript, continued

I've been going around in circles with these online docs and some of the example scripts trying to figure out exactly how classes can be extended purely in the script. The following code ("exampleized" from the SDK/example/weapon & crossbow .cs's) gives me the error "Unknown command Output()", but works when I replace %foo.Output() with Class1::Output(%foo). What am I doing wrong? Or am I always going to have to use the className namespace? That just doesn't sound right. And is there a good writeup somewhere of the OOP aspects the torquescript? I don't think the official online docs do a decent job.

// test.cs
// a script file for general testing of script functionality

echo("------ Entering test.cs ------");

datablock ItemData(Class1Data) {
category = "Class1";
className = "Class1";
};
datablock ItemData(Class2Data) {
category = "Class2";
className = "Class2";
};

// simple class methods
function Class1::Output(%this) {
echo("Class 1");
}
function Class2::Output(%this) {
echo("Class 2");
}

//new objects
%foo = new Item() {
dataBlock = "Class1Data";
};
%bar = new Item() {
dataBlock = "Class2Data";
};

%foo.Output();
%bar.Output();