public void setNextToken(String nextToken) {
        this.nextToken = nextToken;
    }
<p>
An identifier that was returned from the previous call to this operation, which can be used to return the next
set of items in the list.
</p>

@param nextToken
       An identifier that was returned from the previous call to this operation, which can be used to return the
       next set of items in the list.
aws-java-sdk-cognitoidp/src/main/java/com/amazonaws/services/cognitoidp/model/ListUserPoolsRequest.java