ters:</span></dt>
<dd><code>mediaType</code> - the media type of the variant - may be <code>null</code>.</dd>
<dd><code>language</code> - the language of the variant (two-letter ISO-639 code);
                        may be <code>null</code>.</dd>
<dd><code>country</code> - uppercase two-letter ISO-3166 language code of the variant;
                        may be <code>null</code> provided <code>language</code> is <code>null</code> too.</dd>
<dd><code>languageVariant</code> - vendor and browser specific lan