@Override
    public void invalidate() {
        // Nothing to invalidate
    }
Creates a new AbstractAuthenticatedUser that considers usernames to be
case-sensitive or case-insensitive based on the case sensitivity setting
of an instance of {@link LocalEnvironment}, as returned by
{@link LocalEnvironment#getCaseSensitivity()}.
guacamole-ext/src/main/java/org/apache/guacamole/net/auth/AbstractAuthenticatedUser.java