A way to identify sparse regions up front so those can be skipped?

[guiltyxsin]

Hi,

This is my first time looking at reading AFF4 file format via this library so please bear with me if my question is stupid and maybe what I wanted to do is already available through existing version.

I'm using the 9EB file from https://github.com/aff4/ReferenceImages/tree/master/Errata

Is there a way to identify the sparse regions from the library? so once we read/carve into the regions we can then skip to the end of it. If it's not available, is it feasible to create such feature?

Thank you for your time in advance.