add support for destuser in Query Follower/Following(s) ...

Partial/XIdentityProvider+Friendship.cs

@@ -607,10 +607,12 @@ namespace xIdentityService.Providers
         /// Retrieve All User's Followers based on Query Model ...
         /// </summary>
         /// <param name="query">Query Model Descriptor</param>
+        /// <param name="destUser">Dest User for Reading Followers</param>
         /// <param name="tokens">Requester User's Descriptor</param>
         /// <returns></returns>
         public async Task<XQueryResult<XFriendDto>> QueryFollowers(
             XQuery query,
+            string destUser,
             XTokenResponse tokens
         )
         {
@@ -619,6 +621,7 @@ namespace xIdentityService.Providers
             await validationProvider
                 .GroupValidationBuilder()
                 .AddNotNull(tokens)
+                .AddNotEmpty(destUser)
                 .AddNotEmpty(tokens.AccessToken)
                 .ValidateGroupAsync();
 
@@ -631,6 +634,7 @@ namespace xIdentityService.Providers
             //
             // Attach XQuery to Request ...
             request = request.AttachXQuery(query);
+            request = request.AttachDestUser(destUser);
 
             //
             var response = await RunRestRequest<XQueryResult<XFriendDto>>(
@@ -866,10 +870,12 @@ namespace xIdentityService.Providers
         /// Retrieve All User's Followings based on Query Model ...
         /// </summary>
         /// <param name="query">Query Model Descriptor</param>
+        /// <param name="destUser">Dest User for Reading Followers</param>
         /// <param name="tokens">Requester User's Descriptor</param>
         /// <returns></returns>
         public async Task<XQueryResult<XFriendDto>> QueryFollowings(
             XQuery query,
+            string destUser,
             XTokenResponse tokens
         )
         {
@@ -878,6 +884,7 @@ namespace xIdentityService.Providers
             await validationProvider
                 .GroupValidationBuilder()
                 .AddNotNull(tokens)
+                .AddNotEmpty(destUser)
                 .AddNotEmpty(tokens.AccessToken)
                 .ValidateGroupAsync();