public void setCatalog(String catalog) {
        this.catalog = catalog;
    }
<p>
Required. The catalog related to the request. Fixed value: <code>AWSMarketplace</code>
</p>

@param catalog
       Required. The catalog related to the request. Fixed value: <code>AWSMarketplace</code>
aws-java-sdk-marketplacecatalog/src/main/java/com/amazonaws/services/marketplacecatalog/model/DescribeChangeSetRequest.java