@Override
public boolean containsVertex(final long vertexid) {
verifyOpen();
if (vertexCache.contains(vertexid)) {
if (!vertexCache.get(vertexid, vertexConstructor).isRemoved()) return true;
else return false;
} else if (vertexid > 0 && graph.containsVertexID(vertexid, txHandle)) return true;
else return false;
}
public InternalVertex getExistingVertex(final long id) {
// return vertex no matter what, even if deleted
InternalVertex vertex = vertexCache.get(id, vertexConstructor);
return vertex;
}