private void handleAuthorizeCallback(AuthorizeCallback ac) {
        String authenticationID = ac.getAuthenticationID();
        String authorizationID = ac.getAuthorizationID();
        LOG.info("Successfully authenticated client: authenticationID={}; authorizationID={}.",
                authenticationID, authorizationID);
        ac.setAuthorized(true);
        ac.setAuthorizedID(authenticationID);
    }
Default callback handler for Sasl servers. The callbacks required for all the SASL
mechanisms enabled in the server should be supported by this callback handler. See
<a href="https://docs.oracle.com/javase/8/docs/technotes/guides/security/sasl/sasl-refguide.html">Java SASL API</a>
for the list of SASL callback handlers required for each SASL mechanism.
clients/src/main/java/org/apache/kafka/common/security/authenticator/SaslServerCallbackHandler.java