resource.rb

        normalize.each do |attribute, resource_name|
          resource_class = find_resource_class(resource_name)
          attr = attribute.to_s

          if resource_class && resource_class.respond_to?(:find)
            denormalize_resource = ->(child_resource) {
              resource_class.find(child_resource)
            }
            results.each do |result|
              if result[attr].kind_of?(Array)
                result[attr].map!(&denormalize_resource)
              else
                result[attr] = denormalize_resource.call(result[attribute])
              end
            end
          end
        end