@Override
	protected void init() {
		goToService = tool.getService(GoToService.class);
		provider.setGoToService(goToService);
		markerService = tool.getService(MarkerService.class);

		tool.addPopupActionProvider(this);

		navUpdater = new NavUpdater();
		repaintMgr = new SwingUpdateManager(500, () -> provider.repaint());

	}
Acquires <code>GoToService</code> if available.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/bookmark/BookmarkPlugin.java