def start(self, tagname, attrs, nsmap=None):
if tagname == self._tagname:
if self._depth == 0:
self._builder = TreeBuilder()
self._depth += 1
self._builder.start(tagname, attrs, nsmap)
def __init__(self, tagname):
self._tagname = tagname
self._builder = TreeBuilder()
self._rootbuilder = self._builder
self._depth = 0
