code: def __process_username_password(self):
          
  
          if self.use_username_password_store is not None:
              if self.args.clear_store:
                  with load_config(sections=AUTH_SECTIONS) as config:
                      config.remove_option(AUTH_SECTION, 'username')
              if not self.args.username:
                  self.args.username = get_username(use_store=self.use_username_password_store)
  
              if self.args.clear_store:
                  remove_password(AUTH_SECTION, username=self.args.username)
              if not self.args.password:
                  self.args.password = get_password(AUTH_SECTION, username=self.args.username)
                  if self.use_username_password_store:
                      save_password(AUTH_SECTION, self.args.password, self.args.username)
docs: If indicated, process the username and password