protected function push(Statement $statement)
    {
        $maxConnections = $this->pool->getConnectionLimit();

        if ($this->statements->count() > ($maxConnections / 10)) {
            return;
        }

        if ($maxConnections === $this->pool->getConnectionCount() && $this->pool->getIdleConnectionCount() === 0) {
            return;
        }

        $this->statements->push($statement);
    }