public function getTotalCount()
{
$select = $this->getQuery([new \Zend_Db_Expr('COUNT(*)')]);
$select->reset(\Zend_Db_Select::LIMIT_COUNT);
$select->reset(\Zend_Db_Select::LIMIT_OFFSET);
$select = (string) $select;
$amount = (int) $this->db->fetchOne($select, $this->model->getConditionVariables());
return $amount;
}