void addMarkerProviderSupplier(MarginProviderSupplier supplier) {
		controller.addMarkerProviderSupplier(supplier);
		refreshAndKeepPerspective();
	}
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