The IMobSpawnerBaseLogic object contains all kinds of information on how and where to spawn something for mob spawners.

It might be required to import the class to avoid errors.
import crafttweaker.tileentity.IMobSpawnerBaseLogic;

ZenGetter	ZenSetter	Описание	Тип
ZenGetter nbtData	ZenSetter nbtData	Описание NBT Data for the spawner. (See below)	Тип IData
ZenGetter entityDefinition	ZenSetter entityDefinition	Описание Entity Definition to be spawned.	Тип IEntityDefinition
ZenGetter world	ZenSetter ​	Описание World that the spawner belongs to.	Тип IWorld
ZenGetter blockPos	ZenSetter ​	Описание The position of the spawner block.	Тип IBlockPos

ZenScript
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void updateSpawner(); // Updates the spawner for spawning an entity and ticking down the spawn timer.

void setDelayToMin(); // Sets the delay of the spawner to the minimum delay for the next spawn.