    # File lib/fog/openstack.rb, line 11
            def self.slurp(error)
              if error.response.body.empty?
                data = nil
                message = nil
              else
                data = Fog::JSON.decode(error.response.body)
                message = data['message']
              end

              new_error = super(error, message)
              new_error.instance_variable_set(:@response_data, data)
              new_error
            end