public function getItem($itemId, $data = null)
{
$params = $this->setUpParams('item', $itemId, $data, 'itemListData', 'itemData');
$array = $this->makeRequest('item', $itemId, $params);
if ($this->appendId($itemId)) {
return new staticItem($array);
} else {
return new ItemList($array);
}
}