How to display percentage number on top of arc aka. the pie chart?

now, there isn't such function yet? also, is there any way to annotate numbers on any chart generated?
so that pygwalker at current stage is for prototyping?

No files, tests, or entry points are identified in the issue. Start by reviewing PyGWalker's existing pie-chart rendering and annotation capabilities, then clarify whether the goal is percentage labels on arcs, annotations on all chart types, or both before defining completion criteria.

Written by the indexing model from the issue text.