When the number of shards in the data stream is greater than the default
value for the MaxResults parameter, or if you explicitly
specify a value for MaxResults that is less than the number of
shards in the data stream, the response includes a pagination token named
NextToken. You can specify this NextToken value in
a subsequent call to ListShards to list the next set of shards.
For more information about the use of this pagination token when calling the
ListShards operation, see ListShardsInput$NextToken.
An array of JSON objects. Each object represents one shard and specifies the
IDs of the shard, the shard's parent, and the shard that's adjacent to the
shard's parent. Each object also contains the starting and ending hash keys
and the starting and ending sequence numbers for the shard.