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   "maxScale": 0,
   "legend": [
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     "label": "ເສັ້ນທາງຫຼວງ ແຫ່ງຊາດ / National road",
     "url": "2b35830fbbb80a1ffb14a64f1dbd4057",
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     "label": "ເສັ້ນທາງຫຼວງ ລະດັບແຂວງ/ເມືອງ / Provincial/District road",
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     "label": "ເສັ້ນທາງຊົນນະບົດ / Rual road",
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    {
     "label": "ເສັ້ນທາງຮ່ອມເຂດຊຸມຊົນ / Residential road",
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     "contentType": "image/png",
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    {
     "label": "ເສັ້ນທາງເດີນເຮືອ ແລະ ການຂົນສົ່ງທາງນໍ້າ / Ferry and river transportation route",
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     "label": "ທາງດ່ວນ / Highway",
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    },
    {
     "label": "ທາງຍ່າງ / Walking track",
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