Interactivity & Parent-Child Commands

I want to build a command line where the user should be able to run a parent command like 1. And the commands 2 and 3 should also have access to argument values of command 1.
1. GetAnimal -Name "a" -Age "b"
2. GetDog -Breed "c"
3. GetCat -Color "d"

I was wondering if _commandline_ supports interactivity (users should be able to run multiple child commands after running the parent command until they exit), and parent-child structure described above.

該 issue 未提供檔案、測試或進入點；先檢視 command-line parser 現有的命令與引數模型。將其與 GetAnimal、GetDog 和 GetCat 範例比較，接著判斷是否支援互動式 parent-child 執行，以及何種行為可定義完成。

由索引模型根據 Issue 內容生成。