{
  "target": "config/stringMap.json",
  "sources" :
  [
    {
      "file": "config/mapFiles/tracks.json",
      "list_key": "track_types",
      "id_key": "id",
      "remove_missing_keys" : false,
      "string_map_target_key": "track_types"
    }
  ]
}