code: public function deleteReverseProperties($ipblock,$ip)
      {
  		if (!$ipblock)
  			throw new BadMethodCallException('Parameter $ipblock is missing.');
  		if (!$ip)
  			throw new BadMethodCallException('Parameter $ip is missing.');
          try {
              $r = $this->delete('ip/' . urlencode($ipblock) . '/reverse/' . $ip)->send();
          } catch (\Exception $e) {
              throw new IpException($e->getMessage(), $e->getCode(), $e);
          }
          return $r->getBody(true);
      }
docs: /*
  deleteReverseProperties
  
  @param string ipblock
  @param string ip
  
  @returns mixed