Code within is folder is essentially copied directly from the `ament_package` repo, or more specifically the `ament_index_python` package. See original source here:

https://github.com/ament/ament_index/tree/86f5a6712690830fe3e19752f70cfcdb00a3d223/ament_index_python/ament_index_python

TODO: reconcile duplicate code via shared codebase
