Kit: trait method forwarding

test.kit

trait MyTrait {
    public function doSomething(): Void;
}

abstract MyType: Int {
    rules {
        ($this.doSomething) => $this.MyTrait.doSomething;
    }
}

implement MyTrait for MyType {
    public function doSomething() {
        printf("hi!\n");
    }
}

function main() {
    var x: MyType = 1;
    x.doSomething();
}