throw new InsufficientPrivilegeException(ERR_COI);
throw new InsufficientPrivilegeException(E.GROUP_COI);
  protected static void canOptin(Group g, Subject subj, Field f)     throws  InsufficientPrivilegeException  {    if (!        (SubjectHelper.eq(g.getSession().getSubject(), subj))       && f.equals(Group.getDefaultList())     )    {      throw new InsufficientPrivilegeException(ERR_COI);    }     // FIXME Refactor    PrivilegeResolver.getInstance().canOPTIN(g.getSession(), g, subj);  } // protected static void canOptin(g, subj, f)