presto-geospatial/src/main/java/io/prestosql/plugin/geospatial/BingTileFunctions.java/BingTileFunctions/toQuadKey
class BingTileFunctions:    @Description("Given a Bing tile, returns its QuadKey")
    @ScalarFunction("bing_tile_quadkey")
    @SqlType(StandardTypes.VARCHAR)
    public static Slice toQuadKey(@SqlType(BingTileType.NAME) long input)
    {
        return utf8Slice(BingTile.decode(input).toQuadKey());
    }