new (OpenID::AX::StoreResponse)

    # File lib/openid/extensions/ax.rb, line 490
          def initialize(succeeded = true, error_message = nil)
            super()
            if succeeded and error_message
              raise Error, "Error message included in a success response"
            end
            if succeeded
              @mode = SUCCESS_MODE
            else
              @mode = FAILURE_MODE
            end
            @error_message = error_message
          end