public String getShardIterator() {
        return this.shardIterator;
    }
<p>
The position in the shard from which to start reading stream records sequentially. A shard iterator specifies
this position using the sequence number of a stream record in a shard.
</p>

@return The position in the shard from which to start reading stream records sequentially. A shard iterator
        specifies this position using the sequence number of a stream record in a shard.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/GetShardIteratorResult.java