code: @Override
      public IPermission[] getPermissions(String activity, String target)
              throws AuthorizationException {
          return getAuthorizationService().getPermissionsForOwner(getOwner(), activity, target);
      }
docs: Retrieve an array of IPermission objects based on the given parameters. Any null parameters
  will be ignored.
  
  @param activity String
  @param target String
  @return IPermission[]
  @exception AuthorizationException