dispose method

Future<void> dispose()

Implementation

Future<void> dispose() async {
  if (_disposed) return;
  _disposed = true;
  for (final key in _pending.keys) {
    _generations[key] = (_generations[key] ?? 0) + 1;
  }
  final sessions = _sessions.values.toList(growable: false);
  _sessions.clear();
  for (final session in sessions) {
    await session.dispose();
  }
}