Impemented Typer interface

bind-go-functions.go

@@ -14,6 +14,10 @@ func NewGolangFunctor(f FuncTemplate) *golangFunctor {
 	return &golangFunctor{f: f}
 }
 
+func (functor *golangFunctor) TypeName() string {
+	return "GoFunctor"
+}
+
 func (functor *golangFunctor) Invoke(ctx ExprContext, name string, args []any) (result any, err error) {
 	return functor.f(ctx, name, args)
 }