code: def validate_verification(self, confirmation_code, attribute='email'):
          
          self.check_token()
          return self.client.verify_user_attribute(
              AccessToken=self.access_token,
              AttributeName=attribute,
              Code=confirmation_code
          )
docs: Verifies the specified user attributes in the user pool.
          :param confirmation_code: Code sent to user upon intiating verification
          :param attribute: Attribute to confirm