code: public function getLineProperties($id, $line)
      {
          if (!$id)
              throw new BadMethodCallException('Missing parameter $id.');
          if (!$line)
              throw new BadMethodCallException('Missing parameter $line.');
          try {
              $r = $this->get('xdsl/' . $id . '/lines/' . $line)->send();
          } catch (\Exception $e) {
              throw new XdslException($e->getMessage(), $e->getCode(), $e);
          }
          return $r->getBody(true);
      }
docs: Get properties of a line
  
  @param string $id
  @param string $line
  @return string (json encoded properties)
  @throws \Ovh\Common\Exception\BadMethodCallException
  @throws Exception\XdslException