ChunkWatchEvent.UnWatch is fired when an EntityPlayer stops watching a chunk.
This event is fired when a chunk is removed from the watched chunks of an EntityPlayer in
net.minecraft.server.level.ChunkMap#updateChunkTracking(ServerPlayer, ChunkPos, Packet[], boolean, boolean).
ChunkWatchEvent.Watch is fired when an EntityPlayer begins watching a chunk.
This event is fired when a chunk is added to the watched chunks of an EntityPlayer in
net.minecraft.server.level.ChunkMap#updateChunkTracking(ServerPlayer, ChunkPos, Packet[], boolean, boolean).