public GTreeNode getModelRoot() {
		return realModelRootNode;
	}
This method returns the root node that was provided to the tree by the client, whether from
the constructor or from {@link #setRootNode(GTreeNode)}. This node represents the data model
and always contains all the nodes regardless of any filter being applied. If a filter is
applied to the tree, then this is not the actual root node being displayed by the
{@link JTree}.

@return the root node as provided by the client.
Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/GTree.java