private function createDemoFiles()
{
$rootDir = $this->getContainer()->get('kernel')->getRootDir();
$articleFileDir = $rootDir . '/../web/uploads/articlefiles';
$issueFileDir = $rootDir . '/../web/uploads/issuefiles';
$adminFileDir = $rootDir . '/../web/uploads/files';
$fs = new Filesystem();
$fs->mkdir($articleFileDir);
$fs->mkdir($issueFileDir);
$fs->mkdir($adminFileDir);
$fs->dumpFile($articleFileDir . '/article.txt', 'Neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit...');
$fs->dumpFile($issueFileDir . '/issue.txt', 'Neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit...');
$fs->dumpFile($adminFileDir . '/admin.txt', 'Neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit...');
$fs->dumpFile($adminFileDir . '/journalApplication.txt', 'Neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit...');
$fs->dumpFile($adminFileDir . '/journalFile.txt', 'Neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit...');
}