Test if the input package name etc. was correct / successful. This function is meant to be called from inside the target package.
List length two, containing two elements:
pkgname: The name of the target package.
funcname: The name of the function handing over the required values.
Is printing the parameters defined by the target package, and is returning those parameters in an (invisible) list.
Please refer to
uniset for a link to examples
and a real-world demo.