#712 - Support grouping multiple versions of a movie

MediaBrowser.Model/Session/PlaystateCommand.cs

@@ -37,5 +37,11 @@ namespace MediaBrowser.Model.Session
         public PlaystateCommand Command { get; set; }
 
         public long? SeekPositionTicks { get; set; }
+
+        /// <summary>
+        /// Gets or sets the controlling user identifier.
+        /// </summary>
+        /// <value>The controlling user identifier.</value>
+        public string ControllingUserId { get; set; }
     }
 }