In my JMeter test file i have multiple user-defined-variables-nodes and i would like to activate or deactivate them under specific circumstances.
Therefore i need to get them as a JMeterTreeNode Object in Java. So instead of treeModel.getRoot(); i want something like treeModel.getNodeByName() so that my code could look somewhat like this:

```
JMeterTreeModel treeModel = new JMeterTreeModel(new Object());
JMeterTreeNode variablesNode= (JMeterTreeNode) treeModel.getNodeByName("jmeterNodeNameOrId");
if (true)        
{        
  variablesNode.setEnabled(true);
}

```