CraftCli\Support\DirectoryHelper::verifyDirectoryIsReadable PHP Method

    public function verifyDirectoryIsReadable($path, $label = 'path')
    {
        $this->verifyDirectoryExists($path, $label);
        if (!is_readable($path)) {
            throw new Exception(sprintf('Could not read the %s at %s', $label, $path));
        }
    }