public function getSourceImage($hash, $organization = '')
    {
        $path = self::SOURCEIMAGE_RESOURCE.'/'.$this->getOrganizationName($organization);

        $path .= '/'.$hash;

        $contents = $this
            ->call('GET', $path)
            ->getBody()
            ->getContents();

        return SourceImage::createFromJsonResponse($contents);
    }