/usr/share/php/Guzzle/Log/ClosureLogAdapter.php is in php-guzzle 3.7.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | <?php
namespace Guzzle\Log;
/**
 * Logs messages using Closures. Closures combined with filtering can trigger application events based on log messages.
 */
class ClosureLogAdapter extends AbstractLogAdapter
{
    public function __construct($logObject)
    {
        if (!is_callable($logObject)) {
            throw new \InvalidArgumentException('Object must be callable');
        }
        $this->log = $logObject;
    }
    public function log($message, $priority = LOG_INFO, $extras = array())
    {
        call_user_func($this->log, $message, $priority, $extras);
    }
}
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