The event is not cancelable.

The event does not have a result.

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
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import crafttweaker.forge.api.event.grindstone.GrindstoneEvent;

GrindstoneEvent extends Event. That means all methods available in Event are also available in GrindstoneEvent

NameTypeHas GetterHas Setter
Name
bottomItem
Type
IItemStack
Has Getter
true
Has Setter
false
Name
topItem
Type
IItemStack
Has Getter
true
Has Setter
false
Name
xp
Type
int
Has Getter
true
Has Setter
true