Микроразметка availability для товаров - JoomShopping

<?php if (!$this->config->hide_text_product_not_available){ ?>
<div class = "not_available" id="not_available"><?php print $this->available?></div>
<?php }?> 

    <?php if ($this->config->product_show_qty_stock){?>
                <div class="qty_in_stock"><?php echo _JSHOP_QTY_IN_STOCK?>: <span id="product_qty"><?php print sprintQtyInStock($this->product->qty_in_stock);?></span></div>
            <?php }?>

if ($this->product->product_quantity > 0) {
    echo 'В наличии';
}

 <div itemprop="offers" itemscope itemtype="http://schema.org/Offer">
  <span itemprop="availability">  <?php if (!$this->config->hide_text_product_not_available){ ?>
        <div class = "not_available" id="not_available">
           <?php if($this->available == '') {
                            $this->available = _JSHOP_PRODUCT_IS_AVAILABLE;
                     } 
                    print $this->available;
            ?></div>
    <?php }?> </span> </div>