/// <summary>
/// Save all uncommited events from a specific aggregate root.
/// </summary>
/// <param name = "source">
/// The aggregate root for which all uncommited events should be saved.
/// </param>
public IEnumerable <IEvent> Save(IEventSource source)
{
var uncommittedEvents = source.GetUncommittedEvents();
SaveEvents(source.Id, source.UncommittedVersion, uncommittedEvents);
source.AcceptChanges();
return(uncommittedEvents);
}