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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def iter_tree(jottapath, JFS):
 """Get a tree of of files and folders. use as an iterator, you get something like os.walk"""

    filedirlist = JFS.getObject('%s?mode=list' % jottapath)
    log.debug("got tree: %s", filedirlist)
    if not isinstance(filedirlist, JFSFileDirList):
        yield ( '', tuple(), tuple() )
    for path in filedirlist.tree:
        yield path