Sending block updates done to chunk

I have this function that when I call it changes a bunch of blocks in the passed chunk. I am going to be passing it chunks one by one and having it process the chunk.  This is going to be done during play when a tick goes off and/or item. I can do that but the updates are not sent to the client like you can in the world object.

Any idea or do I need to do all this from the world object?

Thanks!