                  },
                            z: 10
                        }))
                    ]
                };

                var chart = testHelper.create(echarts, 'main_self_layout', {
                    height: 200,
                    title: [
                        'matrix self layout test',
                        'z-index test'
                    ],
                    option: option,
                });
            });

        </script>





        <script>
            require([
