...Advanced use.
.formalsNotInCurrentDots(fun, ..., dots, formalNames, signature = character())A list of the formals of the fun that are missing from the ... or dots.
A function
The ... from inside a function. Will be ignored if dots is
provided explicitly.
Optional. If this is provided via say dots = list(...),
then this will cause the ... to be ignored.
Optional character vector. If provided then it will override the fun