@Override
public void attachToSubparser(final Subparser subparser) {
subparser.addArgument("number").help("Phone number").nargs("+");
subparser.help("Check if the specified phone number/s have been registered");
subparser.addArgument("--json")
@Override
public void attachToSubparser(final Subparser subparser) {
subparser.addArgument("number").help("Phone number").nargs("+");
subparser.help("Check if the specified phone number/s have been registered");
subparser.addArgument("--json")