summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#registerAsyncCompletion(java.lang.String,co.aikar.commands.CommandCompletions.AsyncCommandCompletionHandler)" class="member-name-link">registerAsyncCompletion</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;id,
 <a href="CommandCompletions.AsyncCommandCompletionHandler.html" title="interface in co.aikar.commands">C