Re-document using RStudio's Ctrl + Shift + D shortcut (i.e., not

calling `library(projpred)` beforehand).

If the re-documentation would have taken place by calling `library(projpred)`
and then `devtools::document(roclets = c('rd', 'namespace'))` in the console
(the `roclets = c('rd', 'namespace')` part is due to the `PackageRoxygenize:
rd,namespace` entry in the `brms.Rproj` file), then in
`man/get_refmodel.brmsfit.Rd`, line `get_refmodel.brmsfit(` would have been
replaced by `\method{get_refmodel}{brmsfit}(`.

NAMESPACE

@@ -221,6 +221,7 @@ S3method(prior_predictor,btl)
 S3method(prior_predictor,btnl)
 S3method(prior_predictor,default)
 S3method(prior_summary,brmsfit)
+S3method(projpred::get_refmodel,brmsfit)
 S3method(r_eff_log_lik,"function")
 S3method(r_eff_log_lik,matrix)
 S3method(ranef,brmsfit)