src/Utilities/Bootstrap4CssSelector.php
public static function getFieldGroupSelector($formName)
    {
        $formSelector = CssSelector::getFormByNameSelector($formName);

        if (empty($formSelector)) {
            return '';
        }

        return sprintf('%s .form-group', $formSelector);
    }
public static function getFieldGroupSelector($formName)
    {
        $formSelector = CssSelector::getFormByNameSelector($formName);

        if (empty($formSelector)) {
            return '';
        }

        return sprintf('%s .form-group', $formSelector);
    }
public static function getFieldGroupSelector ( $ formName ) { $ formSelector = CssSelector :: getFormByNameSelector ( $ formName ) ; if ( empty ( $ formSelector ) ) { return '' ; } return sprintf ( '%s .form-group' , $ formSelector ) ; }
Returns selector of field's group

@param string $formName Name of form (value of the "name" attribute)
@return string
Returns selector of field s group