code: public boolean removeNamedPolicy(String ptype, String... params) {
          return removeNamedPolicy(ptype, Arrays.asList(params));
      }
docs: removeNamedPolicy removes an authorization rule from the current named policy.
  
  @param ptype the policy type, can be "p", "p2", "p3", ..
  @param params the "p" policy rule.
  @return succeeds or not.