subparser.addArgument("recipient").help("Specify the recipients' phone number.").nargs("*");
final var mutuallyExclusiveGroup = subparser.addMutuallyExclusiveGroup();
mutuallyExclusiveGroup.addArgument("-g", "--group").help("Specify the recipient group ID.");
subparser.addArgument("recipient").help("Specify the recipients' phone number.").nargs("*");
final var mutuallyExclusiveGroup = subparser.addMutuallyExclusiveGroup();
mutuallyExclusiveGroup.addArgument("-g", "--group").help("Specify the recipient group ID.");