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     "label": "<all other values>",
     "url": "82d3126a3f280763eed3678a984fc854",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAPklEQVQ4je3QoREAMAxC0QpGYM5Mzg7t9aqigytfIJ8AVbWXMdwhacEkPdAZAo7DnOgFnAeD0Qr4zYeSbOIBgLsIXsXp/9sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "FCODE"
    },
    {
     "id": "1",
     "heading": ""
    }
   ]
  }
 ]
}