Vertex srcDVertex = srcTx.addVertex(null);
srcDVertex.setProperty("name", "D");
srcDVertex.setProperty("age", 10);
srcTx.addEdge(null, srcAVertex, srcBVertex, "friends");
srcTx.addEdge(null, srcBVertex, srcCVertex, "enemies");
srcTx.addEdge(null, srcCVertex, srcDVertex, "friends");
} finally {
srcTx.commit();
}