public static synchronized void install(DockingWindowManager winMgr) {

		if (installed) {
			return;
		}
		installed = true;

		if (Platform.CURRENT_PLATFORM.getOperatingSystem() != OperatingSystem.MAC_OS_X) {
			return;
		}

		Desktop.getDesktop().setAboutHandler(
			e -> DockingWindowManager.showDialog(new AboutDialog()));
	}
Applies an about handler which will show our custom about dialog.

@param winMgr The docking window manager to use to install the about dialog.
Ghidra/Framework/Project/src/main/java/ghidra/framework/plugintool/PluginToolMacAboutHandler.java