subparser.addArgument("number").help("Contact number");
subparser.addArgument("-n", "--name").required(true).help("New contact name");
subparser.addArgument("-e", "--expiration")
.required(false)
.type(int.class)
.help("Set expiration time of messages (seconds)");
subparser.addArgument("number").help("Contact number");
subparser.addArgument("-n", "--name").required(true).help("New contact name");
subparser.addArgument("-e", "--expiration")
.required(false)
.type(int.class)
.help("Set expiration time of messages (seconds)");