protected AbstractVertex getVertex(OnmsNode onmsnode) {
   OnmsIpInterface ip = getAddress(onmsnode);
   AbstractVertex vertex =
       new SimpleLeafVertex(TOPOLOGY_NAMESPACE_LINKD, onmsnode.getNodeId(), 0, 0);
   vertex.setIconKey(getIconName(onmsnode));
   vertex.setLabel(onmsnode.getLabel());
   vertex.setIpAddress(ip == null ? null : ip.getIpAddress().getHostAddress());
   vertex.setNodeID(Integer.parseInt(onmsnode.getNodeId()));
   vertex.setTooltipText(getNodeTooltipText(onmsnode, vertex, ip));
   return vertex;
 }