code: public OccupantInfo getOccupantInfo (Name username)
      {
          try {
              for (OccupantInfo info : occupantInfo) {
                  if (info.username.equals(username)) {
                      return info;
                  }
              }
          } catch (Throwable t) {
              log.warning("PlaceObject.getOccupantInfo choked.", t);
          }
          return null;
      }
docs: Looks up a user's occupant info by name.
  
  @return the occupant info record for the named user or null if no user in the room has that
  username.