gremlin> conf = new BaseConfiguration()
==>org.apache.commons.configuration.BaseConfiguration@1bbae752
gremlin> graph = TinkerGraph.open(conf)
==>tinkergraph[vertices:0 edges:0]
gremlin> g=graph.traversal()
==>graphtraversalsource[tinkergraph[vertices:0 edges:0], standard]
gremlin> g.io("/home/jcb/river.xml").with(IO.reader,IO.graphml).read().iterate()