/// <summary>
/// Signals that the specified <paramref name="snapshot"/> has been applied to the persisted key/value store. This method gets
/// called from the <see cref="ISnapshot{TKey, TValue}.OnCommitted"/> invocation on <see cref="Snapshot"/> and causes the edit
/// pages captured by the snapshot to be pruned by merging their edits with the in-memory key/value store representation kept
/// in the <see cref="_store"/> field.
/// </summary>
/// <param name="snapshot">The snapshot that has been successfully committed.</param>
private void OnCommitted(Snapshot snapshot)
{
//
// Acquire the lock to edit the in-memory key/value store representation kept in _store.
//
lock (_gate)
{
snapshot.Accept(new DictionarySnapshotVisitor <TKey, TValue>(_store));
_deltas.OnStateSaved();
}
}