Sometimes we need to restrict any specific wordpress post or page for any specific user role. For this there are lots of plugin. While replying to a facebook group post where someone asked something lightweight or no heavy plugin. So tried to write a simple one file plugin with hard coded page or post id and user role which can be used in theme. Here I am sharing the code if that helps other who is reading this article.
https://gist.github.com/manchumahara/b4930caec8119ecf258f70a6b7248d09