public String getDefaultDisplayVersion() {
        return this.defaultDisplayVersion;
    }
<p>
The default package version to display. This depends on the package format:
</p>
<ul>
<li>
<p>
For Maven and PyPI packages, it's the most recently published package version.
</p>
</li>
<li>
<p>
For npm packages, it's the version referenced by the <code>latest</code> tag. If the <code>latest</code> tag is
not set, it's the most recently published package version.
</p>
</li>
</ul>

@return The default package version to display. This depends on the package format: </p>
        <ul>
        <li>
        <p>
        For Maven and PyPI packages, it's the most recently published package version.
        </p>
        </li>
        <li>
        <p>
        For npm packages, it's the version referenced by the <code>latest</code> tag. If the <code>latest</code>
        tag is not set, it's the most recently published package version.
        </p>
        </li>
aws-java-sdk-codeartifact/src/main/java/com/amazonaws/services/codeartifact/model/ListPackageVersionsResult.java