                    "children": [
                        {
                            "czmObject": {
                                "xbsjType": "Imagery",
                                "name": "谷歌影像",
                                "xbsjImageryProvider": {
                                    "XbsjImageryProvider": {
                                        "url": "//server.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}",
                                        "m