Beta Private constructorReadonly blockBlock impacted by this event.
If this is set to true within an event handler, the piston activation is canceled.
Readonly dimensionDimension that contains the block that is the subject of this event.
Readonly isTrue if the piston is the process of expanding.
Readonly pistonContains additional properties and details of the piston.
Contains information related to changes before a piston expands or retracts.