@Override
	public void setMemento(LocationMemento memento) {

		/*
			This code may have issues (see SCR 9208).  For now we've made it an option so that
			users have to enable and disable it at will.
		*/

		FunctionGraphOptions options = controller.getFunctionGraphOptions();
		ViewRestoreOption viewOption = options.getViewRestoreOption();
		if (viewOption == ViewRestoreOption.REMEMBER_SETTINGS) {
			FGLocationMemento fgMemento = (FGLocationMemento) memento;
			controller.setGraphPerspective(fgMemento.getGraphPerspectiveInfo());
		}
	}
Returns true when something destructive has happened to the data upon which the graph has
created, like a memory block move.
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/FGProvider.java