### Question:
AuthenticationCommand implements EntryExpiration, Serializable { public abstract void apply(InstanceInfo instanceInfo);  abstract void apply(InstanceInfo instanceInfo); abstract boolean isRequiredValidJwt(); void applyToRequest(HttpRequest request); static final AuthenticationCommand EMPTY; }### Answer:
@Test void testEmptyCommand() { assertFalse(AuthenticationCommand.EMPTY.isExpired()); AuthenticationCommand.EMPTY.apply(null); }