public void setThemes(java.util.Collection<AssetBundleExportJobThemeOverrideProperties> themes) {
        if (themes == null) {
            this.themes = null;
            return;
        }

        this.themes = new java.util.ArrayList<AssetBundleExportJobThemeOverrideProperties>(themes);
    }
<p>
An optional list of structures that control how <code>Theme</code> resources are parameterized in the returned
CloudFormation template.
</p>

@param themes
       An optional list of structures that control how <code>Theme</code> resources are parameterized in the
       returned CloudFormation template.
aws-java-sdk-quicksight/src/main/java/com/amazonaws/services/quicksight/model/AssetBundleCloudFormationOverridePropertyConfiguration.java