code: public function make($wsdl, array $classMap = [])
      {
          return new SoapClient($wsdl, [
              'trace'      => true,
              'exceptions' => true,
              'encoding'   => 'utf-8',
              'features'   => SOAP_SINGLE_ELEMENT_ARRAYS,
              'classmap'   => $classMap,
              'cache_wsdl' => WSDL_CACHE_MEMORY,
          ]);
      }
docs: Make a new SoapClient instance.
  
  @param string $wsdl     WSDL
  @param array  $classMap Class map
  
  @return \TransIP\Soap\SoapClient