InstantenousMobEffect
Link to instantenousmobeffect
Importing the class
Link to importing-the-class
It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import at the very top of the file.
ZenScript Copyimport crafttweaker.api.entity.effect.InstantenousMobEffect;
Extending MobEffect
Link to extending-mobeffect
InstantenousMobEffect extends MobEffect. That means all methods available in MobEffect are also available in InstantenousMobEffect