def make_stream_features(self, stream, features):
self.stream = stream<EOL>if stream.peer_authenticated and not stream.peer.resource:<EOL><INDENT>ElementTree.SubElement(features, FEATURE_BIND)<EOL><DEDENT>
Add resource binding feature to the <features/> element of the
        stream.

        [receving entity only]

        :returns: update <features/> element.