acle.com/javase/8/docs/api/java/security/Principal.html?is-external=true" title="class or interface in java.security">Principal</a>&nbsp;principal,
                         <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;groups)</code>
<div class="block">Asks the contai