Resolve a path to a .meta directory.
If the path already ends with '.meta', returns it as-is. Otherwise, appends '.meta' as a subdirectory.
Path that may or may not end with '.meta'.
The resolved .meta directory path.
Resolve a path to a .meta directory.
If the path already ends with '.meta', returns it as-is. Otherwise, appends '.meta' as a subdirectory.