/// <summary>
/// Serializes and inserts an object into the database.
/// </summary>
/// <param name="obj">The object to store</param>
/// <returns>A GUID generated by the GuidProvider</returns>
public Guid Insert(TGroup obj)
{
var guid = guidProvider();
var data = serializer.Serialize(obj);
storageEngine.Insert(guid, data);
return(guid);
}