when i use new \Phalcon\Paginator\Adapter\QueryBuilder, it execute two sql.

one sql is

builder = $this->modelsManager->createBuilder()
        ->columns('*')
        ->from('List')
        ->orderBy('sendtime DESC');

second sql is

SELECT COUNT(*) AS rowcount FROM fast_list ORDER BY fast_list.sendtime DESC

how can i get second sql count?