openrtb-core/src/main/java/com/google/openrtb/util/OpenRtbUtils.java
public static boolean filterSeat(SeatBidOrBuilder seatbid, @Nullable String seatFilter) {
    return seatFilter == null
        ? !seatbid.hasSeat()
        : seatFilter == SEAT_ANY || seatFilter.equals(seatbid.getSeat());
  }
public static boolean filterSeat(SeatBidOrBuilder seatbid, @Nullable String seatFilter) {
    return seatFilter == null
        ? !seatbid.hasSeat()
        : seatFilter == SEAT_ANY || seatFilter.equals(seatbid.getSeat());
  }
Performs a filter by seat.

@param seatbid Seat to filter
@param seatFilter Filter for seat. You can use {@code null} to select the anonymous seat,
or {@link #SEAT_ANY} to not filter by seat
@return {@code true} if the seat passes the filter