Invoker.</span><code><span class="memberNameLink"><a href="../../../../../jakarta/ws/rs/client/AsyncInvoker.html#head-jakarta.ws.rs.client.InvocationCallback-">head</a></span>(<a href="../../../../../jakarta/ws/rs/client/InvocationCallback.html" title="interface in jakarta.ws.rs.client">InvocationCallback</a>&lt;<a href="../../../../../jakarta/ws/rs/core/Response.html" title="class in jakarta.ws.rs.core">Response</a>&gt;&nbsp;callback)</code>
<div class="block">Invoke HTTP HEAD method for the current reques