RestClient::decode_response PHP Method

    public function decode_response()
    {
        if (empty($this->decoded_response)) {
            $format = $this->get_response_format();
            if (!array_key_exists($format, $this->options['decoders'])) {
                throw new RestClientException("'{$format}' is not a supported " . "format, register a decoder to handle this response.");
            }
            $this->decoded_response = call_user_func($this->options['decoders'][$format], $this->response);
        }
        return $this->decoded_response;
    }