code: public boolean removeNamedGroupingPolicy(String ptype, String... params) {
          return removeNamedGroupingPolicy(ptype, Arrays.asList(params));
      }
docs: removeNamedGroupingPolicy removes a role inheritance rule from the current named policy.
  
  @param ptype the policy type, can be "g", "g2", "g3", ..
  @param params the "g" policy rule.
  @return succeeds or not.