def METHOD_NAME(self):
    """
    Before Zope 2.11, litmus props tests 19: propvalnspace and 20:
    propwformed were failing because Zope did not strip off the
    xmlns: attribute attached to XML property values.  We now strip
    off all attributes that look like xmlns declarations.
    """
    reqbody = """<?xml version="1.0" encoding="utf-8" ?>
                 <propertyupdate xmlns='DAV:'>
                 <set>
                 <prop>
                 <t:valnspace xmlns:t='http://webdav.org/neon/litmus/'>
                 <foo xmlns='bar'/>
                 </t:valnspace>
                 </prop>
                 </set>
                 </propertyupdate>"""
    request = {'BODY': reqbody}
    inst = self._makeOne(request)
    self.assertEqual(len(inst.values), 1)
    self.assertEqual(inst.values[0][3]['__xml_attrs__'], {})