use the .. minigallery:: directive on API documentation pages generated using AutoAPI and autosummary, as a theme options

What I found:

From my initial study, Sphinx-Gallery expects the fully qualified module name when generating .examples backreference files. For example:

With autosummary, files are generated like:
ansys.meshing.prime.AddLabelResults.error_code.rst

But with autoapi, the structure is nested, like:
meshing/prime/AddLabelResults.rst

Because of this difference, Sphinx-Gallery cannot find or link the .examples backreference files correctly when using AutoAPI.

This might be fixable by using a Sphinx event to manually create or map the expected backreference files for AutoAPI pages. I will explore this further and update this issue with my findings or a PR.