ReadonlyblocksReadonlyblockLike blocks, for updates that carried a full snapshot.
ReadonlybossReadonlyentitiesEntities from entity events, by entity id; removed when they despawn.
ReadonlyentityReadonlyenvironmentOptional ReadonlyepochOptional ReadonlyinventoryOptional ReadonlyplayerReadonlyplayerReadonlyresourceReadonlyscoreboardReadonlysequenceReadonlysnapshotOptional Readonlystatus
Blocks seen changing since the session opened (block update events), keyed
dimension:x:y:z.