public void dispose() {
		reloadUpdateManager.dispose();
		inTree.dispose();
		outTree.dispose();
		if (currentProgram != null) {
			currentProgram.removeListener(this);
			currentProgram = null;
		}

		refreshAction.dispose();
		filterDuplicates.dispose();
		navigationOutgoingAction.dispose();
		navigationIncomingAction.dispose();
	}
A variable used to restrict open-ended operations, like expanding all nodes or filtering.
Ghidra/Features/DecompilerDependent/src/main/java/ghidra/app/plugin/core/decompiler/taint/TaintSliceTreeProvider.java