public static class XXXEditorExtension{
	   //Inspector 路径
       const string Path_0 = "CONTEXT/类名/xxx";
       //Hierachy 右键菜单路径
       const string Path_1 = "GameObject/xxx";
       //顶部菜单栏路径
       const string Path_2 = "CustomFunc/xxx";
 
       [MenuItem(Path_0)]
       [MenuItem(Path_1)]
       [MenuItem(Path_2)]
       public static void MenuItem_1(MenuCommand menucommand)
       {
           var context = menucommand.context as 类名;
       }

       [MenuItem(itemName: Path_0, validate = true)]
       [MenuItem(itemName: Path_1, validate = true)]
       [MenuItem(itemName: Path_2, validate = true)]
       public static bool MenuItem_1_Validation(MenuCommand menucommand)
       {
           var cs = menucommand.context as 类名;
           return 可以启用该功能？;
       }
}