public void setIfMatch(String ifMatch) {
        this.ifMatch = ifMatch;
    }
<p>
The current versions (<code>ETag</code> values) of both primary and staging distributions. Provide these in the
following format:
</p>
<p>
<code>&lt;primary ETag&gt;, &lt;staging ETag&gt;</code>
</p>

@param ifMatch
       The current versions (<code>ETag</code> values) of both primary and staging distributions. Provide these
       in the following format:</p>
       <p>
       <code>&lt;primary ETag&gt;, &lt;staging ETag&gt;</code>
aws-java-sdk-cloudfront/src/main/java/com/amazonaws/services/cloudfront/model/UpdateDistributionWithStagingConfigRequest.java