# File lib/rgl/graphxml.rb, line 50
50:     def MutableGraph.append_features (includingClass)
51:       super
52: 
53:       # Create a new MutableGraph from the XML-Source _source_.
54: 
55:       def includingClass.from_graphxml (source)
56:         listener = MutableGraphParser.new(self.new)
57:         REXML::Document.parse_stream(source, listener)
58:         listener.graph
59:       end
60:     end