FossilCleanerEvent&BlockFossilCleaner.java

public abstract class FossilCleanerEvent extends Event {

    private final EntityPlayerMP player;
    public ItemStack fossil;

    private FossilCleanerEvent(EntityPlayerMP player, ItemStack fossil){
        this.player = player;
        this.fossil = fossil;
    }

    public EntityPlayerMP getPlayer() {
        return player;
    }

    public ItemStack getFossil() {
        return fossil;
    }

    public void setFossil(ItemStack fossil) {
        this.fossil = fossil;
    }

    @Cancelable
    public static class PlaceCoveredFossil extends FossilCleanerEvent {
        public PlaceCoveredFossil(EntityPlayerMP player, ItemStack fossil) {
            super(player, fossil);
        }
    }


    @Cancelable
    public static class TakeCoveredFossil extends FossilCleanerEvent {
        public TakeCoveredFossil(EntityPlayerMP player, ItemStack fossil) {
            super(player, fossil);
        }
    }

}
//--------------------------------------------------------------------
//BlockFossilCleaner code
final TileEntityFossilCleaner fossilCleaner = BlockHelper.getTileEntity(TileEntityFossilCleaner.class, world, pos);
if (fossilCleaner == null || fossilCleaner.func_191420_l()) return;
final Item item = fossilCleaner.itemInCleaner;
final ItemStack stack = new ItemStack(item);
final FossilCleanerEvent.TakeCoveredFossil event = new FossilCleanerEvent.TakeCoveredFossil((EntityPlayerMP) player, stack);
Pixelmon.EVENT_BUS.post(event);
if (!event.isCanceled()){
  fossilCleaner.setItemInCleaner(null);
  DropItemHelper.giveItemStack((EntityPlayerMP) player, event.getFossil(), false);
}