     stub_request(:post, "http://example.com/articles")       .with(headers: {content_type: "application/vnd.api+json", accept: "application/vnd.api+json"}, body: {         data: {           type: "articles",           attributes: {             title: "Rails is Omakase"           }         }       }.to_json)       .to_return(headers: {content_type: "application/vnd.api+json"}, body: {         data: {           type: "articles",           id: "0",           attributes: {               title: "Rails is Omakase"           },           