code: public function noCandidates()
      {
          if (AddressValidation::REQUEST_OPTION_ADDRESS_CLASSIFICATION == $this->requestAction) {
              throw new \BadMethodCallException(__METHOD__.' should not be called on Address Classification only requests.');
          }
          return isset($this->response->NoCandidatesIndicator);
      }
docs: Tells whether or not the NoCandidatesIndicator is present on the XML document.
  This indicator is returned if the address is so badly formed that UPS is
  unable to even offer any suggested alternatives
  
  @throws \BadMethodCallException
  @return bool