Commands with no description have the string "null" printed as their description when calling usage()

[jkosh44]

Steps to reproduce:

public class DescriptionIssue {
  static class Command {
    @Parameter(names = "-t")
    private String test;
  }

  public static void main(String[] args) {
    JCommander jCommander = JCommander.newBuilder().addCommand("testCommand", new Command()).build();
    jCommander.usage();
  }
}

The jCommander.usage() call above will result in the String literal "null" being printed instead of any description. Below I have copied the result of running that main method:

Usage: <main class> [command] [command options]
  Commands:
    testCommand      null
      Usage: testCommand [options]
        Options:
          -t

Instead of printing "null" it should either print nothing as the description or raise an error that the command doesn't have a description

[jkosh44]

By the way, I'm using version 1.78 for this.