public static void AnimationNamePopup(GameObject go, SkillString variable, object obj = null, FieldInfo field = null)
 {
     if (SkillEditorGUILayout.BrowseButton(go != null, Strings.get_Tooltip_Browse_Animations_on_GameObject()))
     {
         StringEditor.editingVariable = variable;
         StringEditor.editingObject   = obj;
         StringEditor.editingField    = field;
         StringEditor.DoAnimationNameMenu(go);
     }
 }