Question about AbstractUseBuilder::newUse

[Cédric Pasteur]

Hi,
I am writing a language support plugin for OCaml (I'll soon commit it to 
playground). In Caml, every file automatically corresponds to a module named 
like the file, so I decided to create a namespace context in the main ast node.

The problem is that when I add this context , use building fails inside this 
context. It works correctly in child contexts (eg functions) but a call to new 
use in the namespace context doesn't have any effect. 
Everything works if I don't create this top namespace context.

What can be the reason for a newUse() call to fail ? What am I doing wrong?

Thanks in advance

Cédric