Can you add an option to call a DO Function from another DO Function in the same namespace?

For example i have two functions called: "envokeSomething" and "validateJwt" inside of the same namespace. Now i want to call the validateJwt inside of the envokeSomething function.

Right now its possible only with http request but it would be great if you could make an option to call it inside some function like: Function.call("validateJwt") or even import it like a module. Its make sense due the fact that its the same namespace.