y-table-tab3"><code>&lt;T extends <a href="HttpUpgradeHandler.html" title="interface in jakarta.servlet.http">HttpUpgradeHandler</a>&gt;<br>T</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#upgrade(java.lang.Class)" class="member-name-link">upgrade</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</