public CopyDistributionRequest withIfMatch(String ifMatch) {
        setIfMatch(ifMatch);
        return this;
    }
<p>
The version identifier of the primary distribution whose configuration you are copying. This is the
<code>ETag</code> value returned in the response to <code>GetDistribution</code> and
<code>GetDistributionConfig</code>.
</p>

@param ifMatch
       The version identifier of the primary distribution whose configuration you are copying. This is the
       <code>ETag</code> value returned in the response to <code>GetDistribution</code> and
       <code>GetDistributionConfig</code>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cloudfront/src/main/java/com/amazonaws/services/cloudfront/model/CopyDistributionRequest.java