support 'as' prefixes for libs

[subzero911]

I import a helper library with "as" prefix

And use it in annotations:

Generated code contains an error:

[kevmoo]

Yup! An old issue. It's gnarly because it touches a LOT of code!

[woprandi]

It seems to be a common issue for any code generator

[kevmoo]

Yep! Tracking prefixing is tricky!