src/Api/AbstractApi.php
protected function head($path, array $parameters = array(), $requestHeaders = array())
    {
        if (array_key_exists('ref', $parameters) && is_null($parameters['ref'])) {
            unset($parameters['ref']);
        }

        $response = $this->client->getHttpClient()->request($path, null, 'HEAD', $requestHeaders, array(
            'query' => $parameters
        ));

        return $response;
    }
protected function head($path, array $parameters = array(), $requestHeaders = array())
    {
        if (array_key_exists('ref', $parameters) && is_null($parameters['ref'])) {
            unset($parameters['ref']);
        }

        $response = $this->client->getHttpClient()->request($path, null, 'HEAD', $requestHeaders, array(
            'query' => $parameters
        ));

        return $response;
    }
Send a HEAD request with query parameters.

@param string $path           Request path.
@param array  $parameters     HEAD parameters.
@param array  $requestHeaders Request headers.

@return \Guzzle\Http\Message\Response