close method

@override Future<void> close()

Closes the connection. Idempotent.

Implementation

@override
Future<void> close() async {
  if (_closed) return;
  _closed = true;
  _current = BleConnectionState.disconnected;
  if (!_state.isClosed) {
    _state.add(BleConnectionState.disconnected);
    await _state.close();
  }
  for (final c in _notify.values) {
    if (!c.isClosed) await c.close();
  }
}