function _getFSObject(path) {
        if (!path) {
            return path;
        } else if (_pathIsFile(path)) {
            return FileSystem.getFileForPath(path);
        }
        return FileSystem.getDirectoryForPath(path);
    }
@private

Gets the FileSystem object (either a File or Directory) based on the path provided.

@param {string} path Path to retrieve