/// <summary>
        /// Refresh cached data.
        /// </summary>
        /// <param name="userContext">User context.</param>
        protected override void RefreshCache(IUserContext userContext)
        {
            lock (ReferenceRelationTypes)
            {
                ReferenceRelationTypes.Clear();
            }

            lock (References)
            {
                References.Clear();
            }
        }
 /// <summary>
 /// Refresh cached data.
 /// </summary>
 /// <param name="userContext">User context.</param>
 protected virtual void RefreshCache(IUserContext userContext)
 {
     ReferenceRelationTypes.Clear();
     References.Clear();
 }