DrawRoundRectGradient
CallbackAdapterPlayer::DrawRoundRectGradient(const BRect& rect, const BPoint& radii, BGradient& gradient,
BoundingBoxCallbacks::DrawRoundRectGradient(const BRect& rect, const BPoint& radii,
CanvasCallbacks::DrawRoundRectGradient(const BRect& _rect, const BPoint& radii, BGradient& gradient,