Sets entry default value.
Sets entry default value array.
Entry default value array.
Sets entry help description (one-liner).
Entry help description (one-liner).
Display name for entry.
Gets whenever entry can be repeated.
Whenever entry is required.
Sets entry name.
Entry name.
Sets entry optional flag.
Sets whenever entry can be repeated.
Sets entry required flag.
Adds entry validator.
Entry validators.
Interface for all program or command entries - flags, options and arguments.