internal override void OnHeaderControlsGUI()
        {
            base.OnHeaderControlsGUI();

            // We want to have this button enabled even for immutable package
            var previousEnabled = GUI.enabled;

            GUI.enabled = packageState != null && packageState.isValidFile && targets.Length == 1;
            if (GUILayout.Button(Styles.viewInPackageManager, EditorStyles.miniButton))
            {
                if (!EditorApplication.ExecuteMenuItemWithTemporaryContext("Window/Package Manager", new[] { packageState }))
                {
                    Debug.LogWarning(s_LocalizedPackageManagerUINotInstalledWarning);
                }
            }
            GUI.enabled = previousEnabled;
        }