Plugins - Implemented features enable/disable UI

src/Artemis.Core/Plugins/DataModelExpansions/Internal/BaseDataModelExpansion.cs

@@ -20,7 +20,7 @@ namespace Artemis.Core.DataModelExpansions
         /// </summary>
         public ReadOnlyCollection<PropertyInfo> HiddenProperties => HiddenPropertiesList.AsReadOnly();
 
-        internal DataModel InternalDataModel { get; set; }
+        internal DataModel? InternalDataModel { get; set; }
 
         /// <summary>
         ///     Called each frame when the data model should update
@@ -28,6 +28,12 @@ namespace Artemis.Core.DataModelExpansions
         /// <param name="deltaTime">Time in seconds since the last update</param>
         public abstract void Update(double deltaTime);
 
+        internal void InternalUpdate(double deltaTime)
+        {
+            if (InternalDataModel != null)
+                Update(deltaTime);
+        }
+
         /// <summary>
         ///     Override to provide your own data model description. By default this returns a description matching your plugin
         ///     name and description