#' Returns a list of disallowed functions.
#'
#' \code{blacklist} returns a list of functions that are not allowed
#' to be executed. The package name containing the function is a
#' key the value of this key is a list of the names of all functions
#' in this package that are disallowed.
#'
#' @return list
blacklist <- function() {
return(list(
base = c('system', 'system2')
))
}
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