requiredOption with choices

[firmart]

I already had

.addOption(new Option("-s, --service <service>", "Service provider to use.")
        .choices(["a", "b"])
        .default("a", "A"))

I want to make this option required. There is .requiredOption but not as powerful as .addOption (i.e. cannot specify choices). AFAIK there is no way to specify an option choices and make it required at the same time.
An .addRequiredOption would seem redundant. Would it be possible to add a .required() method to Option ?

[shadowspawn]

Use .makeOptionMandatory().

Background: the reason for the name change is that "required" inside the Option class has always meant the option has a required option-argument, as opposed to an optional option-argument, or no option-argument for a boolean option. When we added .requiredOption() the naming made sense at the Command level, but I felt it was too confusing to use "required" in two different ways in the Option class and used "mandatory" for the new functionality.

[shadowspawn]

Note: the runtime test for a required option is that it has a value after parsing. When you make your option required (mandatory) you probably want to drop the default value to make the user specify a value.

[shadowspawn]

Related issues: #1495 #1564

[firmart]

@shadowspawn Thanks for the quick reply and the remarks. I have checked the code source, but completely missed that method as I kept searching for the word "required" and only found, as you said, required argument. Will keep this issue opened as it is needed to be documented.

[shadowspawn]

Added to README in #1797

[shadowspawn]

Added mention to README in Commander v9.4.1