I am writing a generic interface for controller which has below signature

interface IUser{
    T createUser(
        Map<String, String> headers,
        String userName
    )
}

This will be implemented by a micronaut project as below

public class UserController implements IUser {
    public HttpResponse createUser(
        **Map<String, String> headers,** // I am looking to get the header value here as similar to @RequestHeader in spring boot
        @PathVariable String userName
    ){

    }
}

I need to know if an Annotation already exists in micronaut to bind the header values or a way to create custom annotation to bind the header values as Map<String, String> as parameter to the controller method.