@Override
    public boolean inGroup(final String groupName) {
        return inGroup(getUserRef(), groupName, new HashSet<>());
    }
Run the supplied code regardless of whether there is a current user and also allow all inner code to run
insecurely even if it is often secured when executed from other entry points.
stroom-security/stroom-security-impl/src/main/java/stroom/security/impl/SecurityContextImpl.java