    # File lib/fog/ibm/requests/compute/create_image.rb, line 40
            def create_image(instance_id, name, description)
              response = Excon::Response.new
              if instance_exists? instance_id
                image = Fog::IBM::Mock.private_image(name, description)
                self.data[:images][image["id"]] = image
                response.status = 200
                response.body = image
              else
                response.status = 404
              end
              response
            end