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 "layers": [
  {
   "layerId": 0,
   "layerName": "Existing Roadways",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "CONTROLLED ACCESS",
     "url": "bf323ff185bdd147764bda81df9f4ef8",
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     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
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    },
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     "label": "TOLL",
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     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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    },
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     "label": "Principal Thoroughfare",
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     "values": [
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    },
    {
     "label": "Major Thoroughfare",
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     "height": 20,
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     "values": [
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     ]
    },
    {
     "label": "Collector",
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     "groupId": "1",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "Unclassified Roadway",
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   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Freeway/Tollway"
    },
    {
     "id": "1",
     "heading": "Proposed Classification"
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     "heading": ""
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}