framework/rbac/DbManager.php
public function removeAll()
    {
        $this->removeAllAssignments();
        $this->db->createCommand()->delete($this->itemChildTable)->execute();
        $this->db->createCommand()->delete($this->itemTable)->execute();
        $this->db->createCommand()->delete($this->ruleTable)->execute();
        $this->invalidateCache();
    }
public function removeAll()
    {
        $this->removeAllAssignments();
        $this->db->createCommand()->delete($this->itemChildTable)->execute();
        $this->db->createCommand()->delete($this->itemTable)->execute();
        $this->db->createCommand()->delete($this->ruleTable)->execute();
        $this->invalidateCache();
    }
{@inheritdoc}