Nothing
#' @export
levels.train <- function(x, ...) {
if(any(names(x) == "levels")) {
out <- x$levels
attributes(out) <- NULL
} else {
if(x$modelType == "Classification") {
if(!isS4(x$finalModel) && !is.null(x$finalModel$obsLevels))
return(x$finalModel$obsLevels)
if(is.null(x$modelInfo)) {
code <- getModelInfo(x$method, regex = FALSE)[[1]]
} else code <- x$modelInfo
if(!is.null(code$levels)){
checkInstall(code$library)
for(i in seq(along = code$library))
do.call("requireNamespaceQuietStop", list(package = code$library[i]))
out <- code$levels(x$finalModel, ...)
} else out <- NULL
} else out <- NULL
}
out
}
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