public void refreshDisplayWithoutRebuilding() {
		FGData functionGraphData = controller.getFunctionGraphData();
		if (functionGraphData.hasResults()) {
			controller.refreshDisplayWithoutRebuilding();
		}
	}
Tells the graph that some display data may have changed, but the changes are not worth
performing a full rebuild
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/FGProvider.java