@Override
	protected void init() {
		super.init();

		frontEndService = tool.getService(FrontEndService.class);
		if (frontEndService != null) {
			frontEndService.addProjectListener(this);
		}

		setupActions();
	}
A {@link Plugin} that supplies a {@link GFileSystem filesystem} browser component
that allows the user to view the contents of filesystems and perform actions on the
files inside those filesystems.
Ghidra/Features/Base/src/main/java/ghidra/plugins/fsbrowser/FileSystemBrowserPlugin.java