private FileSystemService fsService() {
		// use a delayed initialization so we don't force the FileSystemService to initialize
		if (fsService == null) {
			fsService = FileSystemService.getInstance();
		}
		return fsService;
	}
Prompts the user to pick a file system container file to open using a local
filesystem browser and then displays that filesystem in a new fsb browser.
Ghidra/Features/Base/src/main/java/ghidra/plugins/fsbrowser/FileSystemBrowserPlugin.java