void setModelFreshnessListener(ChangeListener modelFreshnessListener) {
		this.modelFreshnessListener = modelFreshnessListener;
	}
Sets a listener on this descriptor that will be notified when the references contained
in this descriptor may no longer be accurate.  For example, the listener will be called
when an undo or redo is performed in Ghidra.
@param modelFreshnessListener The listener to add.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/navigation/locationreferences/LocationDescriptor.java