protected function getVerificationCode($code)
    {
        // Trim Code:
        
        $code = trim($code);
        
        // Detect HTML:
        
        if (stripos($code, '<meta') === 0) {
            
            // Extract Verification Code:
            
            preg_match('/content="(.+)"/', $code, $matches);
            
            // Update or Nullify:
            
            $code = isset($matches[1]) ? $matches[1] : null;
            
        }
        
        // Answer Code:
        
        return $code;
    }