public IEnumerable <Entity> Clip(ReadOnlyLine limit) => throw null;
public IEnumerable <Polygon> Trim(ReadOnlyLine limit, bool coordinateZFromThisEntity) => throw null;
public IEnumerable <Entity> Clip(ReadOnlyLine limit) => throw null;
public IEnumerable <Polygon> Trim(ReadOnlyLine limit, bool coordinateZFromThisEntity) => throw null;