conflicts reports on objects that exist with the same name in
two or more places on the
search path, usually because
an object in the user's workspace or a package is masking a system
object of the same name. This helps discover unintentional masking.
A subset of the search path, by default the whole search path.
detail = FALSE, a character vector of masked objects.
detail = TRUE, a list of character vectors giving the masked or
masking objects in that member of the search path. Empty vectors are
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