[Python-ideas] argparse.py in version 3.8.2 Action=Custom ActionClass needs an option to have methods

Hi, Got the argparse() in version 3.8.2 and above the action=CusotmClass can have a user defined custom subclass and override the functionality in the def __init__() method. Along with this can we also have a built in custom method/methods that I can define under this custom Class, so that instead of calling the Action itself I have the option of calling the Action.Method() during the add_argument defintition. Regards Ranga