public void setSort(String sort) {
        this.sort = sort;
    }
<p>
Specifies the fields or custom expressions to use to sort the search results. Multiple fields or expressions are
specified as a comma-separated list. You must specify the sort direction (<code>asc</code> or <code>desc</code>)
for each field; for example, <code>year desc,title asc</code>. To use a field to sort results, the field must be
sort-enabled in the domain configuration. Array type fields cannot be used for sorting. If no <code>sort</code>
parameter is specified, results are sorted by their default relevance scores in descending order:
<code>_score desc</code>. You can also sort by document ID (<code>_id asc</code>) and version (
<code>_version desc</code>).
</p>
<p>
For more information, see <a
href="http://docs.aws.amazon.com/cloudsearch/latest/developerguide/sorting-results.html">Sorting Results</a> in
the <i>Amazon CloudSearch Developer Guide</i>.
</p>

@param sort
       Specifies the fields or custom expressions to use to sort the search results. Multiple fields or
       expressions are specified as a comma-separated list. You must specify the sort direction (<code>asc</code>
       or <code>desc</code>) for each field; for example, <code>year desc,title asc</code>. To use a field to
       sort results, the field must be sort-enabled in the domain configuration. Array type fields cannot be used
       for sorting. If no <code>sort</code> parameter is specified, results are sorted by their default relevance
       scores in descending order: <code>_score desc</code>. You can also sort by document ID (
       <code>_id asc</code>) and version (<code>_version desc</code>).</p>
       <p>
       For more information, see <a
       href="http://docs.aws.amazon.com/cloudsearch/latest/developerguide/sorting-results.html">Sorting
       Results</a> in the <i>Amazon CloudSearch Developer Guide</i>.
aws-java-sdk-cloudsearch/src/main/java/com/amazonaws/services/cloudsearchdomain/model/SearchRequest.java