presto-geospatial/src/main/java/io/prestosql/plugin/geospatial/GeoFunctions.java/GeoFunctions/stLength
class GeoFunctions:    @Description("Returns the length of a LineString or Multi-LineString using Euclidean measurement on a 2D plane (based on spatial ref) in projected units")
    @ScalarFunction("ST_Length")
    @SqlType(DOUBLE)
    public static double stLength(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
    {
        OGCGeometry geometry = deserialize(input);
        validateType("ST_Length", geometry, EnumSet.of(LINE_STRING, MULTI_LINE_STRING));
        return geometry.getEsriGeometry().calculateLength2D();
    }