          #
          # Parse the URL
          #
-@@ -414,11 +431,48 @@
+@@ -414,11 +431,53 @@
          def notFound(f):
              f.trap(http.HTTPError)
              if f.response.code != responsecode.NOT_FOUND:

+        d.addErrback(notFound)
+        return d
 
+    def locateChildResource(self, res, childpath):
+        """
+        Looks up the child resource with the given name given the parent resource.
+        @param uri: The URL last path segment of the desired resource.
+        @return: a L{Deferred} resulting in the L{IResource} at the
+            given URL or C{None} if no such resource can be located.
+        @raise HTTPError: If C{url} is not a URL on the site that this

+                return f
+            return None
+
+        d = defer.maybeDeferred(self._getChild, None, resource, [segment], updatepaths=False)
+        d.addCallback(self._rememberResource, url)
+        d.addErrback(notFound)
+        return d
