@Override
public void attachToSubparser(final Subparser subparser) {
+ subparser.help("Retrieve an already downloaded attachment base64 encoded.");
subparser.addArgument("--id").required(true).help("The ID of the attachment file.");
var mut = subparser.addMutuallyExclusiveGroup().required(true);
mut.addArgument("--recipient").help("Sender of the attachment");