/* (non-Javadoc)
  * @see nl.adaptivity.process.processModel.ProcessModel#getNode(java.lang.String)
  */
 @Override
 public final T getNode(final Identifiable nodeId) {
   if (nodeId instanceof ProcessNode) {
     return (T) nodeId;
   }
   return mProcessNodes.get(nodeId);
 }
 public T getNode(final int pos) {
   return mProcessNodes.get(pos);
 }