[Bioperl-l] liftOver API

[Arkady]

Hi folks,

I've seen references occasionally to ensembl API or a BioPerl module
for converting between (human) genome assemblies (e.g. hg17 to hg18).
I'm also, of course, aware of liftOver, and of the chain file format.
But I'm more interested in the API. Does this still exist? Where can I
find it?

If not, does anyone have something that does this?

Cheers,
John Woods