Permissions umask = umaskHolder.get();
Permissions umask = data.get().umask;
    public static Permissions getUmask()    {        Permissions umask = umaskHolder.get();        if (umask == null)        {            umask = new Permissions();            setUmask(umask);        }        return umask;         /* FIXME         * should be configurable         * see https://trac.openmicroscopy.org.uk/omero/ticket/179         * getOwner().getProfile().getUmask         * object.getDetails().getUmask()         * CurrentDetails.getDetails().getUmask();         */    }