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{
    "nodes":
        [
            {"name":"Client 1",       "group":1},
            {"name":"Loadbalancer 1", "group":2},
            {"name":"Webserver 1",    "group":3},
            {"name":"Webserver 2",    "group":3}
        ],
    "links":
        [
            {"source":0, "target":1, "value":1},
            {"source":1, "target":2, "value":1},
            {"source":1, "target":3, "value":1}
        ]
}