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");
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");