Given a file in a plug-in cartridge with the following code:
'use strict':
Var base = module.superModule;
Function applyCustomCache (req,res,next){
res.CachePeriod = 6; //eslint-disable-line no-param-reassign
res.cachePeriodUnit = 'hours') //eslint-disable-line no-param-reassign
next();
}
Module.exports = base;
Module.exports.applyCustomCache = applyCustomCache;
What does this code extend?