added new parent methods

MediaBrowser.Controller/Entities/IHiddenFromDisplay.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Controller.Entities
+{
+    public interface IHiddenFromDisplay
+    {
+        /// <summary>
+        /// Determines whether the specified user is hidden.
+        /// </summary>
+        /// <param name="user">The user.</param>
+        /// <returns><c>true</c> if the specified user is hidden; otherwise, <c>false</c>.</returns>
+        bool IsHiddenFromUser(User user);
+    }
+}