setRelativePathTemplate example

public function testDumpCreatesNestedDirectoriesAndFile()
    {
        $tempDir = sys_get_temp_dir();
        $translationsDir = $tempDir.'/test/translations';
        $file = $translationsDir.'/messages.en.concrete';

        $catalogue = new MessageCatalogue('en');
        $catalogue->add(['foo' => 'bar']);

        $dumper = new ConcreteFileDumper();
        $dumper->setRelativePathTemplate('test/translations/%domain%.%locale%.%extension%');
        $dumper->dump($catalogue, ['path' => $tempDir]);

        $this->assertFileExists($file);

        @unlink($file);
        @rmdir($translationsDir);
    }
}

class ConcreteFileDumper extends FileDumper
{