public void setQueryString(String queryString) {
        this.queryString = queryString;
    }
<p>
The search query string. For more information about the search query syntax, see <a
href="https://docs.aws.amazon.com/iot/latest/developerguide/query-syntax.html">Query syntax</a>.
</p>

@param queryString
       The search query string. For more information about the search query syntax, see <a
       href="https://docs.aws.amazon.com/iot/latest/developerguide/query-syntax.html">Query syntax</a>.
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/SearchIndexRequest.java