dispose method

void dispose()

Clear the memory

Implementation

void dispose() {
  //
  goOffline();
  _db = null;
  _dbReference = null;

  _onceListeners.clear();
  _addedListeners.clear();
  _removedListeners.clear();
  _changedListeners.clear();
  _movedListeners.clear();
  _valueListeners.clear();

  _app = null;

  for (final sub in _addedSubscription) {
    sub.cancel();
  }
  _addedSubscription.clear();

  for (final sub in _removedSubscription) {
    sub.cancel();
  }
  _removedSubscription.clear();

  for (final sub in _changedSubscription) {
    sub.cancel();
  }
  _changedSubscription.clear();

  for (final sub in _movedSubscription) {
    sub.cancel();
  }
  _movedSubscription.clear();

  for (final sub in _valueSubscription) {
    sub.cancel();
  }
  _valueSubscription.clear();

  _this = null;
}