Reusing documentation across R6Class methods

[arangaca]

Consider this dummy R6Class:

#' @title MyClass
#' @description A dummy class example
MyClass <- R6::R6Class(
  "MyClass",
  public = list(
    #' @field x Data frame or tibble
    x = NULL,
    
    #' @description Create a `MyClass` object.
    #' @param x A data frame or tibble that contains at least a column "a" and "b".
    initialize = function(x) {
      self$x <- x
    },
    
    #' @description Paste data to column "a".
    #' @param col Variable used to paste data.
    #' @returns A tibble.
    paste_to_a = function(col) {
      private$paste("a", col)
    },
    
    #' @description Paste data to column "b".
    #' @param col Variable used to paste data.
    #' @returns A tibble.
    paste_to_b = function(col) {
      private$paste("b", col)
    }
  ),
  private = list(
    paste = function(x, y) {
      dplyr::mutate(self$x, !!x := paste(.data[[x]], .data[[y]], sep = "_"))
    }
  )
)

Is there a way to reuse the documentation across paste_to_a and paste_to_b?

I've tried #' @describeIn paste_to_a or #' @inheritParams paste_to_a in paste_to_b but it makes devtools::document() unhappy.

1: [myclass.R:25] @describeIn requires name and description 
2: [myclass.R:4] Undocumented R6 method: paste_to_b 
3: [myclass.R:4] Must use one @param for each argument
✖ $paste_to_b(col) is not documented

or

1: [myclass.R:4] Undocumented R6 method: paste_to_b 
2: [myclass.R:4] Must use one @param for each argument
✖ $paste_to_b(col) is not documented 
3: @inheritParams failed in topic "MyClass".
✖ All parameters are already documented; none remain to be inherited. 

[Gabor]

Currently the only way is with inline code: Reusing documentation • roxygen2

R6 methods can only use a handful of tags: Documenting other objects • roxygen2