Nothing
check_nc_version <- function(nc_version) {
if (is.null(nc_version)) {
stop("nc_version must not be NULL")
}
allowed_versions <- c(3, 4)
if (!nc_version %in% allowed_versions) {
stop("nc version must be in c(",
paste0(allowed_versions, collapse = ", "),
"), but was ", nc_version
)
}
}
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