var root_ns = graph.by_id[""].as(Namespace)
var ns = new Namespace(graph)
var member = new Attribute(graph)
-var buffer = new RopeBuffer
+var buffer = new Buffer
file.name = "foo.py"
file.model_id = "_foo_8py"
ns.model_id = "namespacefoo"
ns.name = "foo"
ns.declare_member(member)
-ns.doc.add "A documented namespace."
+ns.doc.brief_description = "A documented namespace."
ns.put_in_graph
root_ns.declare_namespace("namespacefoo", "")