code: public static PermissionSet getPermissionSet(final Instance _instance)
          throws EFapsException
      {
          Evaluation.LOG.debug("Evaluation PermissionSet for {}", _instance);
          final Key accessKey = Key.get4Instance(_instance);
          final PermissionSet ret = AccessCache.getPermissionCache().get(accessKey);
          Evaluation.LOG.debug("Evaluated PermissionSet {}", ret);
          return ret;
      }
docs: Gets the permissions.
  
  @param _instance the instance
  @return the permissions
  @throws EFapsException on error