Fix more warnings

Emby.Server.Implementations/Library/InvalidAuthProvider.cs

@@ -4,37 +4,48 @@ using MediaBrowser.Controller.Entities;
 
 namespace Emby.Server.Implementations.Library
 {
+    /// <summary>
+    /// An invalid authentication provider.
+    /// </summary>
     public class InvalidAuthProvider : IAuthenticationProvider
     {
+        /// <inheritdoc />
         public string Name => "InvalidOrMissingAuthenticationProvider";
 
+        /// <inheritdoc />
         public bool IsEnabled => true;
 
+        /// <inheritdoc />
         public Task<ProviderAuthenticationResult> Authenticate(string username, string password)
         {
             throw new AuthenticationException("User Account cannot login with this provider. The Normal provider for this user cannot be found");
         }
 
+        /// <inheritdoc />
         public bool HasPassword(User user)
         {
             return true;
         }
 
+        /// <inheritdoc />
         public Task ChangePassword(User user, string newPassword)
         {
             return Task.CompletedTask;
         }
 
+        /// <inheritdoc />
         public void ChangeEasyPassword(User user, string newPassword, string newPasswordHash)
         {
             // Nothing here
         }
 
+        /// <inheritdoc />
         public string GetPasswordHash(User user)
         {
             return string.Empty;
         }
 
+        /// <inheritdoc />
         public string GetEasyPasswordHash(User user)
         {
             return string.Empty;