@Override
	public void diffLocationChanged(DiffController diffController, Address program1Location) {
		if (!settingLocation) {
			goToServiceGoTo(new ProgramLocation(primaryProgram, program1Location)); // GoToService.goTo()
		}
		updatePgm2Enablement();
	}
Creates the plugin for indicating program differences to the user.

@param tool the tool that owns this plugin.
Ghidra/Features/ProgramDiff/src/main/java/ghidra/app/plugin/core/diff/ProgramDiffPlugin.java