Change the owner of an existing data file or folder.

This is primarily an admin type of operation. In general, the owner of a data file or folder is implicitly set as part of a create or update operation. For data files or folders that reside in a personal space, changing the owner has the effect of moving the data file to the new owner's personal space. Note that, If a given file or folder is not in the root of a personal space, this operation will not succeed, since the parent folder does not reside in the target owner's personal space. If the owner of a folder in the root of a personal space is changed, the owner of all subfolders and files within those subfolders will also recursively change.