UnityEditor.ParticleSystemWindow.OnDisable C# (CSharp) Method

        private void OnDisable()
        {
            SceneView.onSceneGUIDelegate = (SceneView.OnSceneFunc) Delegate.Remove(SceneView.onSceneGUIDelegate, new SceneView.OnSceneFunc(this.OnSceneViewGUI));
            EditorApplication.projectWindowChanged = (EditorApplication.CallbackFunction) Delegate.Remove(EditorApplication.projectWindowChanged, new EditorApplication.CallbackFunction(this.OnHierarchyOrProjectWindowWasChanged));
            EditorApplication.hierarchyWindowChanged = (EditorApplication.CallbackFunction) Delegate.Remove(EditorApplication.hierarchyWindowChanged, new EditorApplication.CallbackFunction(this.OnHierarchyOrProjectWindowWasChanged));
            EditorApplication.playmodeStateChanged = (EditorApplication.CallbackFunction) Delegate.Remove(EditorApplication.playmodeStateChanged, new EditorApplication.CallbackFunction(this.OnPlayModeStateChanged));
            Undo.undoRedoPerformed = (Undo.UndoRedoCallback) Delegate.Remove(Undo.undoRedoPerformed, new Undo.UndoRedoCallback(this.UndoRedoPerformed));
            this.Clear();
            if (s_Instance == this)
            {
                s_Instance = null;
            }
        }