vrecord.setOutEdges(outEdges);
// merge vdata
if (vrecordValue.hasVdata()) {
if (vrecord.vdata() == null)
vrecord.setVdata((VertexData) vrecordValue.vdata());
else if (vrecord.vdata() instanceof Mergable) {
((Mergable) vrecord.vdata()).add(vrecordValue.vdata());
}
}
}