// Map Java types to transmuters
this.defaultTransmuters.put(Double.class, new DoubleTransmuter());
this.defaultTransmuters.put(MultiPolygon.class, new GML2MultiPolygonTransmuter());
this.defaultTransmuters.put(Polygon.class, new GML2PolygonTransmuter());
this.defaultTransmuters.put(Geometry.class, new GML2PolygonTransmuter());
this.defaultTransmuters.put(MultiPoint.class, new GML2MultiPointTransmuter());
this.defaultTransmuters.put(Point.class, new GML2PointTransmuter());
this.defaultTransmuters.put(LinearRing.class, new GML2LinearRingTransmuter());
this.defaultTransmuters.put(LineString.class, new GML2LineStringTransmuter());
this.defaultTransmuters.put(MultiLineString.class, new GML2MultiLineStringTransmuter());