useextendr_api::prelude::*;// TODO impl TryFrom<Sfg> for Robj
// TODO impl IntoRobj for Sfg
pubstructSfgPoint(Doubles);pubstructSfgMultiPoint(RMatrix<f64>);// LineString
pubstructSfgLineString(RMatrix<f64>);pubstructSfgMultiLineString(List);pubstructSfgPolygon(List);pubstructSfgMultiPolygon(List);