check
Check whether a server pack for the given destination already exists and get an incrementor based on whether one exists, how many, or none exist. Think if this as the incrementation Windows does when a file of the same name is copied. foo.bar becomes foo (1).bar etc.
Return
An incremented number, based on whether a server pack of the same name already exists.
Author
Griefed
Parameters
source
The name of the modpack.
destination
The name of the server pack about to be generated.