---
struct T {
    template opDispatch(string name)
    {
        alias int Type;
    }
}

pragma(msg, T.opDispatch!("xxx"), " ", T.xxx); //(T).opDispatch!("xxx") (T).opDispatch!("xxx")
pragma(msg, T.opDispatch!("xxx").Type, " ", T.xxx.Type); //int int
pragma(msg, is(T.opDispatch!("xxx").Type), " ", is(Flag.xxx.Type)); //true false

template U(T) { }

void main() {
    T.opDispatch!("xxx").Type i1; //ok
    T.xxx.Type i2; //Error: T.xxx.Type is used as a type
    
    alias U!(T.opDispatch!("xxx").Type) U1; //ok
    alias U!(T.xxx.Type) U2; //Error: template instance U!(int) does not match template declaration U(T)
}
---