code: public SearchRoomsResult withRooms(RoomData... rooms) {
          if (this.rooms == null) {
              setRooms(new java.util.ArrayList<RoomData>(rooms.length));
          }
          for (RoomData ele : rooms) {
              this.rooms.add(ele);
          }
          return this;
      }
docs: <p>
  The rooms that meet the specified set of filter criteria, in sort order.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setRooms(java.util.Collection)} or {@link #withRooms(java.util.Collection)} if you want to override the
  existing values.
  </p>
  
  @param rooms
  The rooms that meet the specified set of filter criteria, in sort order.
  @return Returns a reference to this object so that method calls can be chained together.