src/Debug/Utilities.php
public static function getIncludedFiles()
    {
        $includedFiles = \get_included_files();
        \usort($includedFiles, function ($valA, $valB) {
            $dirA = \dirname($valA);
            $dirB = \dirname($valB);
            return $dirA == $dirB
                ? \strnatcasecmp($valA, $valB)
                : \strnatcasecmp($dirA, $dirB);
        });
        return $includedFiles;
    }
public static function getIncludedFiles()
    {
        $includedFiles = \get_included_files();
        \usort($includedFiles, function ($valA, $valB) {
            $dirA = \dirname($valA);
            $dirB = \dirname($valB);
            return $dirA == $dirB
                ? \strnatcasecmp($valA, $valB)
                : \strnatcasecmp($dirA, $dirB);
        });
        return $includedFiles;
    }
returns required/included files sorted by directory

@return array