Question about MAN SD 202

I have seen on some pictures, that are many MAN SD 202 from Berlin who had seatgroup like this, is that original, or are this seats placed there later after the buses was new ??? can someone answere me on this?

These seat groups were built in later... I am not sure, but I think in the late 90s/beginning 00s... The most buses were changed, that means also these which come with OMSI (like D88, D89, D90...). Just the oldest buses were not changed (like D87).