New Issue: file.getParentName should be renamed

16755, “e-kayrakli”, “file.getParentName should be renamed”, “2020-11-20T00:12:25Z”

In the Path module we have file.getParentName and dirname that are
functionally the same. We should rename file.getParentName to file.dirname.

Note that we might want to hold off on this until we reach a consensus on