#' addBaseGroup
#'
#' @param map_object leaflet map
#' @param group character
#' @param visible `TRUE` or `FALSE`
#'
#' @return modified leaflet map
#'
#' @export
addBaseGroup <- function (map_object, group, visible = FALSE) {
base_groups <- getBaseGroups(map_object)
base_groups[group] <- visible
map_object <- setBaseGroups(map_object, base_groups)
return(map_object)
}
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