private void remove(PollController conn){
  if (conn == null) {
    return;
  }
  if (_lifecycle.isDestroyed()) {
    return;
  }
  _activeCount.incrementAndGet();
  if (_activeCount.decrementAndGet() == 0 && _lifecycle.isDestroyed()) {
    destroy();
  }
}

private void remove ( PollController conn ) { if ( conn == null ) { return ; } if ( _lifecycle . isDestroyed ( ) ) { return ; } _activeCount . incrementAndGet ( ) ; if ( _activeCount . decrementAndGet ( ) == 0 && _lifecycle . isDestroyed ( ) ) { destroy ( ) ; } }
removes the connection from the selection .
