shardSnapshots = new ArrayList<>();
shardSnapshots.add(new ShardSnapshot("cars", new byte[]{5,6}));
shardSnapshots.add(new ShardSnapshot("people", new byte[]{7,8}));
shardSnapshots.add(new ShardSnapshot("bikes", new byte[]{9,0}));
shardSnapshots = new ArrayList<>();
shardSnapshots.add(new ShardSnapshot("cars", new byte[]{5,6}));
shardSnapshots.add(new ShardSnapshot("people", new byte[]{7,8}));
shardSnapshots.add(new ShardSnapshot("bikes", new byte[]{9,0}));