parser_group.nested - a test for optparse-applicative

Usage: parser_group_nested --hello TARGET [--file-log-path PATH] [--poll]
                           --double-nested STR --triple-nested STR --timeout INT
                           [--file-log-verbosity INT] [-q|--quiet]
                           (-v|--verbosity ARG) --one ARG --two ARG Command

  Nested parser groups

Available options:
  --hello TARGET                     Target for the greeting
  -q,--quiet                         Whether to be quiet
  -v,--verbosity ARG                 Console verbosity
  -h,--help                          Show this help text

First group
- Second group
  - Logging
      --file-log-path PATH           Log file path
      --file-log-verbosity INT       File log verbosity

    - System Options
        --poll                       Whether to poll
        --timeout INT                Whether to time out

      - Nested2
          --double-nested STR        Some nested option

        - Nested3
            --triple-nested STR      Another option

Group 2
- G 2.1
    --one ARG                        Option 1

- G 2.2
    --two ARG                        Option 2