@Override
		public boolean accept(File f, GhidraFileChooserModel model) {
			return f.isDirectory() || ExtensionUtils.isExtension(f);
		}
Filter for a {@link GhidraFileChooser} that restricts selection to those files that are
Ghidra Extensions (zip files with an extension.properties file) or folders.
Ghidra/Framework/Project/src/main/java/ghidra/framework/project/extensions/ExtensionTableProvider.java