UnityEditor.Unsupported.SetAllowCursorLock C# (CSharp) Method

        public static extern void SetAllowCursorLock(bool allow);
        [MethodImpl(MethodImplOptions.InternalCall)]

 private void OnLostFocus()
 {
     if (!EditorApplicationLayout.IsInitializingPlaymodeLayout())
     {
         Unsupported.SetAllowCursorLock(false);
         Unsupported.SetAllowCursorHide(false);
     }
     InternalEditorUtility.OnGameViewFocus(false);
 }