{
  "streets": "Street",
  "satellite": "Imagery",
  "hybrid": "Imagery(Label)",
  "terrain": "Terrain(Label)",
  "topo": "Topographic",
  "gray": "LightGrayCanvas",
  "dark-gray": "DarkGrayCanvas",
  "oceans": "Ocean",
  "national-geographic": "NationalGeographic",
  "osm": "OpenStreetMap",
  "streets-night-vector": "WorldStreetMap(Night)",
  "streets-relief-vector": "WorldStreetMap(Relief)",
  "streets-navigation-vector": "WorldNavigationMap"
}
