Roxygen documentation for existing generics

Question

I wrote a show() method for the S4 class myclass which I had defined in my package. I generated documentation for class and method with roxygen2. Everything works nicely, except that I get the following warning in R CMD check results:

checking for missing documentation entries ... WARNING
Undocumented S4 methods: generic 'length' and siglist 'myclass'

How do I go about documenting show generic which I did not write myself?

Answer 1

In the end, using explicit @aliases and @docType tags solved the issue for me. My documentation block now looks like this:

#' Show method for objects of class \code{myclass}.
#'
#' @docType methods
#' @name show-myclass
#' @rdname show-myclass
#' @aliases show-myclass show,myclass-method
#'
#' @param x A \code{myclass} object.
#'
#' @export