What is ClusterPacketCache?

I was working on my game and I deleted a script by accident then I did "Undo" and it worked, the script came back, but this appeared in the Output:

15:06:58.368 - The Parent property of ClusterPacketCache is locked, current parent: Place1, new parent NULL 15:06:58.368 - The Parent property of OneQuarterClusterPacketCacheBase is locked, current parent: Place1, new parent NULL

Just wondering what it is, thanks! -Leg0Brick

I did a quick search on Google. Anaminus' github page comes up, and the only properties, events, etc that are there are inherited from the Instance class. It seems to be a superclass too.