I've been playing with weld-test, and it'd be neat if a test could specify which Extensions it'd like to use (in an annotation or via dsl-ish config).

But it seems WeldBootstrap is directly using a DefaultServiceLoader to find them.

So, could this be abstracted into an ExtensionLoaderService interface / DefaultServiceExtensionLoaderService impl? Then tests could set up their own ExtensionLoaderService.

-Matt