code: int removeSessionToSessions(Session session, Collection<Session> sessions) {
  		if (sessions != null) {
  			if (sessions.remove(session)) {
  				return 1;
  			}
  		}
  		return 0;
  	}
docs: Remove session in sessions
  
  @param session
  @param sessions
  @return 1 if session removed else 0