src/Debug/Output/Base.php
protected function processSummary()
    {
        $str = '';
        $summaryData = $this->data['logSummary'];
        if ($summaryData) {
            \krsort($summaryData);
            $summaryData = \call_user_func_array('array_merge', $summaryData);
        }
        foreach ($summaryData as $entry) {
            $channel = isset($entry[2]['channel']) ? $entry[2]['channel'] : null;
            if ($this->channelTest($channel)) {
                $str .= $this->processLogEntryWEvent($entry[0], $entry[1], $entry[2]);
            }
        }
        return $str;
    }
protected function processSummary()
    {
        $str = '';
        $summaryData = $this->data['logSummary'];
        if ($summaryData) {
            \krsort($summaryData);
            $summaryData = \call_user_func_array('array_merge', $summaryData);
        }
        foreach ($summaryData as $entry) {
            $channel = isset($entry[2]['channel']) ? $entry[2]['channel'] : null;
            if ($this->channelTest($channel)) {
                $str .= $this->processLogEntryWEvent($entry[0], $entry[1], $entry[2]);
            }
        }
        return $str;
    }
Process summary

@return string