WC_Product_Variable::child_has_weight PHP Method

    public function child_has_weight()
    {
        $transient_name = 'wc_child_has_weight_' . $this->get_id();
        $has_weight = get_transient($transient_name);
        if (false === $has_weight) {
            $has_weight = $this->data_store->child_has_weight($this);
            set_transient($transient_name, $has_weight, DAY_IN_SECONDS * 30);
        }
        return (bool) $has_weight;
    }