public String getNextPageToken() {
        return this.nextPageToken;
    }
<p>
If <code>NextPageToken</code> is returned there are more results available. The value of
<code>NextPageToken</code> is a unique pagination token for each page. Make the call again using the returned
token to retrieve the next page. Keep all other arguments unchanged. Each pagination token expires after 24
hours. Using an expired pagination token will return a <code>400</code> error: "
<code>Specified token has exceeded its maximum lifetime</code>".
</p>
<p>
The configured <code>maximumPageSize</code> determines how many results can be returned in a single call.
</p>

@return If <code>NextPageToken</code> is returned there are more results available. The value of
        <code>NextPageToken</code> is a unique pagination token for each page. Make the call again using the
        returned token to retrieve the next page. Keep all other arguments unchanged. Each pagination token
        expires after 24 hours. Using an expired pagination token will return a <code>400</code> error: "
        <code>Specified token has exceeded its maximum lifetime</code>". </p>
        <p>
        The configured <code>maximumPageSize</code> determines how many results can be returned in a single call.
aws-java-sdk-simpleworkflow/src/main/java/com/amazonaws/services/simpleworkflow/model/ListDomainsRequest.java