// Setup Vector class
LuaValue vectorClass = CoerceJavaToLua.coerce(Vector3Lua.class);
globals.set("Vector3", vectorClass);

// Bind .new() to constructor function
LuaTable t = new LuaTable();
t.set("__add", new TwoArgFunction() {
    public LuaValue call(LuaValue x, LuaValue y) {
        System.out.println("TEST1: " + x);
        System.out.println("TEST2: " + y);
        return x;
    }
});
t.set("__index", t);
vectorClass.setmetatable(t);