close method

Future<void> close()

Implementation

Future<void> close() async {
  if (!_isClosing) {
    final result = _submitWorkFunction(_asynchronous.close, 'close');
    _isClosing = true;
    return result;
  } else if (_pendingWork.isNotEmpty) {
    // Already closing, await all pending operations then.
    final op = _pendingWork.last;
    return op.completer.future;
  }
}