code: protected function call($service, $method, array $parameters = [])
      {
          return $this->getSoapClient($service, $method, $parameters)->__call($method, $parameters);
      }
docs: Make a SOAP call.
  
  @param string $service    WSDL service used for the call
  @param string $method     Method used for the call
  @param array  $parameters Parameters used for the call
  
  @return mixed