presto-geospatial/src/main/java/io/prestosql/plugin/geospatial/GeoFunctions.java/GeoFunctions/simplifyGeometry
class GeoFunctions:    @Description("Returns a \"simplified\" version of the given geometry")
    @ScalarFunction("simplify_geometry")
    @SqlType(GEOMETRY_TYPE_NAME)
    public static Slice simplifyGeometry(@SqlType(GEOMETRY_TYPE_NAME) Slice input, @SqlType(DOUBLE) double distanceTolerance)
    {
        if (isNaN(distanceTolerance)) {
            throw new PrestoException(INVALID_FUNCTION_ARGUMENT, "distanceTolerance is NaN");
        }

        if (distanceTolerance < 0) {
            throw new PrestoException(INVALID_FUNCTION_ARGUMENT, "distanceTolerance is negative");
        }

        if (distanceTolerance == 0) {
            return input;
        }

        return JtsGeometrySerde.serialize(simplify(JtsGeometrySerde.deserialize(input), distanceTolerance));
    }