private void goTo(ProgramLocation location) {
		isFiringNavigationEvent = true;
		GoToService goToService = tool.getService(GoToService.class);
		if (goToService != null) {
			goToService.goTo(location);
			isFiringNavigationEvent = false;
			return;
		}

		// no goto service...navigate the old fashioned way (this doesn't have history)		
		plugin.firePluginEvent(new ProgramLocationPluginEvent(getName(), location, currentProgram));
		isFiringNavigationEvent = false;
	}
A variable used to restrict open-ended operations, like expanding all nodes or filtering.
Ghidra/Features/DecompilerDependent/src/main/java/ghidra/app/plugin/core/decompiler/taint/TaintSliceTreeProvider.java