function _getPathFromFSObject(fsobj) {
        if (fsobj && fsobj.fullPath) {
            return fsobj.fullPath;
        }
        return fsobj;
    }
@private

Given what is possible a FileSystem object, return its path (if a string path is passed in,
it will be returned as-is).

@param {FileSystemEntry} fsobj Object from which the path should be extracted