private void InitializeDefaults()
        {
            SceneManagerAssetPath = AssetDatabase.GetAssetPath(SerializedManager.targetObject);

            bool wasCreated = false;

            AssetFilter assetFilter = AssetDatabaseExtensions.
                                      FindOrCreateSubScriptableObject <AssetFilter>(SceneManagerAssetPath, "SceneFilter", out wasCreated);

            if (wasCreated)
            {
                assetFilter.IncludeIfNoMatch = true;
            }

            SerializedSceneFilter = new SerializedObject(assetFilter);

            SceneHunter sceneHunter = AssetDatabaseExtensions.
                                      GetFirstSubAssetOf <SceneHunter>(SceneManagerAssetPath);

            if (sceneHunter == null)
            {
                sceneHunter = AssetDatabaseExtensions.
                              CreateSubScriptableObject <UnitySceneHunter>(SceneManagerAssetPath, "SceneHunter");
            }

            ScenePopulator = new SerializedObject(sceneHunter);

            SceneNodes = AssetDatabaseExtensions.
                         FindOrCreateSubScriptableObject <SceneNodeCollection>(SceneManagerAssetPath, "SceneNodes", out wasCreated);

            if (wasCreated)
            {
                SceneNodes.SceneManager = TargetManager;
            }

            SceneNodes.PopulateSceneInfos();

            SceneNodesObject = new SerializedObject(SceneNodes);
            SceneNodesProp   = SceneNodesObject.FindProperty("sceneNodes");

            if (AssetDatabaseExtensions.GetSubAssetsOfType <SceneVariableContainer>(TargetManager).Count() == 0)
            {
                TargetManager.SceneVariables.name = "ManagerVariables";
                AssetDatabase.AddObjectToAsset(TargetManager.SceneVariables, TargetManager);
                AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(TargetManager));
            }
            SerializedManager.ApplyModifiedProperties();

            ScenesProp       = SerializedManager.FindProperty("scenes");
            EntrySceneIdProp = SerializedManager.FindProperty("entrySceneId");
            AnyScenesProp    = SerializedManager.FindProperty("anyScene");

            UseOnPlayProp = SerializedManager.FindProperty("useOnPlay");
            GoToOnPlay    = SerializedManager.FindProperty("goToOnPlay");

            SerializedVariables = new SerializedSceneVariableCollection(TargetManager.SceneVariables);
        }
        private static void RemoveSceneAsset(string sourcePath)
        {
            if (!IsValidSceneItem(sourcePath))
            {
                return;
            }

            foreach (SceneManagerController controller in
                     AssetDatabaseExtensions.GetAssetIterator <SceneManagerController>())
            {
                controller.RemoveScene(sourcePath);

                SceneNodeCollection nodes =
                    AssetDatabaseExtensions.GetFirstSubAssetOf <SceneNodeCollection>(controller);

                if (nodes != null)
                {
                    nodes.RemoveSceneNodesByPath(sourcePath);
                }
            }

            SceneManagerEditorWindow.RefreshOpenSceneManagementWindow();
        }