code: def admin_confirm_sign_up(self, username=None):
          
          if not username:
              username = self.username
          self.client.admin_confirm_sign_up(
              UserPoolId=self.user_pool_id,
              Username=username,
          )
docs: Confirms user registration as an admin without using a confirmation
          code. Works on any user.
          :param username: User's username
          :return: