code: synchronized private MeetmeRoom findMeetmeRoom(final String roomNumber)
      {
          MeetmeRoom foundRoom = null;
          for (final MeetmeRoom room : this.rooms)
          {
              if (room.getRoomNumber().compareToIgnoreCase(roomNumber) == 0)
              {
                  foundRoom = room;
                  break;
              }
          }
          return foundRoom;
      }
docs: Returns the MeetmeRoom for the given room number. The room number will be
  an integer value offset from the meetme base address.
  
  @param roomNumber the meetme room number
  @return