docs: def access_required(config=None):
      """
      Authenticates a HTTP method handler based on a custom set of arguments
      """
  
      def _access_required(http_method_handler):
  
          def secure_http_method_handler(self, *args, **kwargs):
  
              # authentication context must be set
              if not self.__provider_config__.authentication:
                  _message = "Service available to authenticated users only, no auth context provider set in handler"
                  authentication_error = prestans.exception.AuthenticationError(_message)
                  authentication_error.request = self.request
                  raise authentication_error
  
              # check for access by calling is_authorized_user
              if not self.__provider_config__.authentication.is_authorized_user(config):
                  _message = "Service available to authorized users only"
                  authorization_error = prestans.exception.AuthorizationError(_message)
                  authorization_error.request = self.request
                  raise authorization_error
  
              http_method_handler(self, *args, **kwargs)
  
          return wraps(http_method_handler)(secure_http_method_handler)
  
      return _access_required