UnityEditor.SceneView.DoOnPreSceneGUICallbacks C# (CSharp) Method

        private void DoOnPreSceneGUICallbacks(Rect cameraRect)
        {
            if (!this.UseSceneFiltering())
            {
                Handles.SetCamera(cameraRect, this.m_Camera);
                this.CallOnPreSceneGUI();
            }
        }