can English: "en-us"</p><p>British English: "en-gb"</p><p>German: "de-de"</p><p>Spanish: "es-es"</p><p>French: "fr-fr"</p><p>Italian: "it-it"</p><p>Mandarin: "zh-cn"</p></dd><dt><span class="parameter">primaryKey</span></dt><dd>Type: <span class="nolink">String</span><br />
    The primary key.  It's a best practice that the application rotate keys periodically. Between rotations, you 
    would disable the primary key, making the secondary key the default, giving you time to swap out the primary.
</dd>