presto-geospatial/src/main/java/io/prestosql/plugin/geospatial/EncodedPolylineFunctions.java/EncodedPolylineFunctions/fromEncodedPolyline
class EncodedPolylineFunctions:    @Description("Decodes a polyline to a linestring")
    @ScalarFunction("from_encoded_polyline")
    @SqlType(GEOMETRY_TYPE_NAME)
    public static Slice fromEncodedPolyline(@SqlType(StandardTypes.VARCHAR) Slice input)
    {
        return serialize(decodePolyline(input.toStringUtf8()));
    }