How to expose a REST API with PATCH (HTTP method)

It is possible to consume REST API using HTTP method PATCH.

Yet, when exposing PATCH method is not available. The only available HTTP methods are GET, POST, PUT, DELETE.

How can we expose a REST API method using PATCH?

Like you already said, there's only get/post/put/delete, so "patch" is unfortunately not possible. I created an Idea for this a while ago, so please upvote it.