public OperationTreeNode(Operation operation, SoapUITreeModel treeModel) {
super(operation, operation.getInterface(), treeModel);
for (int c = 0; c < operation.getRequestCount(); c++) {
Request request = operation.getRequestAt(c);
request.addPropertyChangeListener(Request.NAME_PROPERTY, propertyChangeListener);
requestNodes.add(new RequestTreeNode(request, getTreeModel()));
}
initOrdering(requestNodes, UISettings.ORDER_REQUESTS);
treeModel.mapModelItems(requestNodes);