<!-- reCAPTCHA -->{{ if ( siteKey ) { }}
<div class="form-group{{ if (containerClass) { }} {{= containerClass }}{{ } }}">
    <div id="{{= id }}" class="g-recaptcha" data-sitekey="{{= siteKey }}" data-theme="{{= theme }}" data-type="{{= type }}" data-size="{{= size }}"></div>
</div>
{{ } else { }}
<div class="g-recaptcha" data-sitekey="your_site_key"></div>
{{ } }}