postUpdate

Clear any update zone partial enclosed prebuilt buffers that no longer have any references to them, meaning all the observers' netty channels have had these buffers written out. If a buffer is requested to be written over, but the socket closes or the player logs out before that can actually hit the encoder, the ref count will never be released. In these cases, a fail-safe mechanism is utilized to release the buffer after an entire minute has passed. Under normal circumstances, it should never get into a scenario where this is hit.