feature request: Path.toParent()

[capaj]

I have a path like this for example:

'foo.arr[map]'
or
'foo.arr.map'

and I would really appreciate it, if I could easily get a new path which would lose the last property accessor.
I could parse the strings, but it seems to me this would be useful feature for other people using Path objects.

so ideally:

var pathObj = Path.get('foo.arr[map]');
var parentPathObj = pathObj.toParent();
parentPathObj  //should be equivalent to Path.get('foo.arr');