code: @SubscribeEvent
  	public void onGetCollisionBoxes(GetCollisionBoxesEvent event)
  	//	public void getCollisionBoxes(World world, AxisAlignedBB mask, List<AxisAlignedBB> list, Entity entity)
  	{
  		//no mask, no need to check for collision
  		if (event.getAabb() == null)
  			return;
  
  		for (Chunk chunk : ChunkBlockHandler.getAffectedChunks(event.getWorld(), event.getAabb()))
  			collisionRegistry.processCallbacks(chunk, event.getAabb(), event.getCollisionBoxesList());
  	}
docs: Gets the collision bounding boxes for the intersecting chunks.<br>
  Called via ASM from {@link World#getCollisionBoxes(Entity, AxisAlignedBB)}
  
  @param event the event