function countProducts($groupID, $mustBeInIDs = array(), $manufacturerIDs = array(), $attributes = array(), $find = '', $tag = '', $sellerIDs = array())
{
$products = new \cf\ProductsInSubtree($groupID);
$products->mustBeIn($mustBeInIDs);
$products->filterByManufacturers($manufacturerIDs);
$products->filterByAttributes($attributes);
$products->filterBySellers($sellerIDs);
return $products->countAll();
}
