Look into bad HTML generation for R6 methods

[hadley]

From Kurt:

  GauPro D2MCS DoubleML poems

we get Rd files containing

***********************************************************
\if{html}{\out{
<details open><summary>Inherited methods</summary>
<ul>
</ul>
</details>
}}
***********************************************************

apparently from

 c("\\if{html}{\\out{", details,
   "<ul>",
   sprintf(
     paste0(
       "<li>",
       "<span class=\"pkg-link\" data-pkg=\"%s\" data-topic=\"%s\" data-id=\"%s\">",
       "<a href='../../%s/html/%s.html#method-%s-%s'><code>%s::%s$%s()</code></a>",
       "</span>",
       "</li>"
     ),
     super_meth$package,
     super_meth$classname,
     super_meth$name,
     super_meth$package,
     super_meth$classname,
     super_meth$classname,
     super_meth$name,
     super_meth$package,
     super_meth$classname,
     super_meth$name
   ),
   "</ul>",
   "</details>",
   "}}"
 )

in rd-r6.R when super_meth is empty? Not sure whether this is a
problem in the packages? Btw, the current CRAN versions have

@gaborcsardi would you mind taking a look?

[gaborcsardi]

Reprex in poems, in GenericModel.Rd.