How to create a 0-arity method without parenthesis using Scala 3 low-level typed AST metaprogramming API?

Question

How can I create a 0-arity method without parenthesis using Scala 3 low-level typed AST metaprogramming API?

I tried this:

Refinement(parent, "name", MethodType(Nil)(_ => Nil, _ => TypeRepr.of[String]))

But it comes out as:

[error]    |    def name
[error]    |      (): String;

And if I try and call this refinement it complains with:

method name must be called with () argument

How can I get rid of the parenthesis?