code: public function getCdnPopDetails($pop){
          if (!$pop)
              throw new BadMethodCallException('Parameter $pop is missing.');
          return $this->get('cdn/pops/'.$pop)->send()->getBody(true);
      }
docs: Get POP details/info
  
  @param string $pop : pop name
  @return string (json encoded)
  @throws Exception\BadMethodCallException