My server is Apache 2.0.53 with webdav enabled, and the directory structure is:

/dav/
/dav/FolderA/
/dav/FolderB/
/dav/FolderB/FolderC/

/dav/, /dav/FolderA/, and /dav/FolderB/FolderC/ contain files.

If I create a WebdavResource to /dav/ and do either a list() or getChildResources() it lists only the files and not the subdirectories. However, it lists itself as a child if and only if there are subdirectories.

Example, if I remove FolderA and FolderB from /dav/, and do a list() or getChildResources() I get this:
/dav/file1.txt
/dav/file2.txt

But if /dav/ contains any subdirectories, I get this:
/dav/
/dav/file1.txt
/dav/file2.txt

Given a WebdavResource that is a collection, how do you get a list of the collections contained in it?