## Changes
If we're using a `vfs.Path` backed by a workspace filesystem filer, we
have access to the `workspace.ObjectInfo` value for every file. By
providing access to this value we can use it directly and avoid reading
the first line of the underlying file.
A follow-up change will implement the interface defined in this change
for the workspace filesystem filer.
## Tests
Unit tests.
Pieter Noordhuis