Creates a wrapper function that if called with more arguments than specified, those arguments will be passed in as an array in the final argument.This function is valid in v2.0.0 to v2.17.1. This function has been downloaded 13 times.
fn, but if there are any that have an index greater or equal to
opt_startthey will be passed in as the last parameter which will be an array.
This function requires the following function which is included automatically: