src/Easy/Element/ColumnImage.php
protected function getAlt()
    {
        if ($this->alt == null) {
            return null;
        }
        $formobj = $this->getFormObj();
        return Expression::evaluateExpression($this->alt, $formobj);
    }
protected function getAlt()
    {
        if ($this->alt == null) {
            return null;
        }
        $formobj = $this->getFormObj();
        return Expression::evaluateExpression($this->alt, $formobj);
    }
Get image alternate(ALT) attribut

@return string