Constant DESPAWN 

pub const DESPAWN: FunctionDescriptor;

Schedules an entity for removal when the current initializer, callback, or action completes.

The entity must exist. Removal is deferred until the enclosing initializer, callback, or action completes so checked work sees a consistent world.

Signature

func despawn(entity: Entity) -> Unit

Schedule removal

The current value remains printable while removal is pending.

let entity = spawn(Vec3 {});
despawn(entity);
print(entity);