void setClipboardService(ClipboardService service) {
		clipboardService = service;
		if (clipboardService != null) {
			clipboardService.registerClipboardContentProvider(clipboardProvider);
		}
	}
A construct that allows tests to control the notion of whether this provider has focus
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/FGProvider.java