[Soot-list] What's the purpose of method v() in Scene?

[Peng Gao]

Hi, 

I am a rookie in soot. Still reading the APIs and the source code.

The method v() in object Scene confused me. In the source code, it seems
like an empty method and there's no documentation in API. What's this v()
used for?

Cheers

Peng Gao