create-the-brass-oncerto/kubejs/startup_scripts/create/upgrade_module.js

StartupEvents.registry('item', event => {
    event.create('productivity_module')
    event.create('productivity_module_2')
    event.create('productivity_module_3')
    event.create('speed_module')
    event.create('speed_module_2')
    event.create('speed_module_3')
    event.create('efficiency_module')
    event.create('efficiency_module_2')
    event.create('efficiency_module_3')
});