Aerys\Root::coalesceIndexPath PHP Method

    private function coalesceIndexPath(string $dirPath) : \Generator
    {
        $dirPath = \rtrim($dirPath, "/") . "/";
        foreach ($this->indexes as $indexFile) {
            $coalescedPath = $dirPath . $indexFile;
            if ((yield $this->filesystem->isfile($coalescedPath))) {
                $stat = (yield $this->filesystem->stat($coalescedPath));
                return [$coalescedPath, $stat];
            }
        }
    }