UnityEditor.LocalizationDatabase.SetCurrentEditorLanguage C# (CSharp) Method

        internal static extern void SetCurrentEditorLanguage(SystemLanguage lang);
    }

 internal static void NotifyLanguageChanged(SystemLanguage newLanguage)
 {
     s_TextGUIContents = new Hashtable();
     EditorUtility.Internal_UpdateMenuTitleForLanguage(newLanguage);
     LocalizationDatabase.SetCurrentEditorLanguage(newLanguage);
     EditorApplication.RequestRepaintAllViews();
 }