[QGIS-Developer] Why QgsPointXY is returned by asPoint()

[Radim Blazek]

Is there any reason why methods

QgsPointXY asPoint() const;
QgsPolylineXY asPolyline() const;
QgsPolygonXY asPolygon() const;
QgsMultiPointXY asMultiPoint() const;
QgsMultiPolylineXY asMultiPolyline() const;
QgsMultiPolygonXY asMultiPolygon() const;

returning Qgs...XY do not have XY at the end of name? For example

QgsPointXY asPointXY() const;
QgsPolylineXY asPolylineXY() const;
....

Radim