Base::configureFileOnce

private function configureFileOnce()
{
	if ($this->fileConfigured)
	{
		return;
	}

	$this->configureFile();

	$this->controller->configureFile(
		$this->fileId,
		'crm',
		$this->fileDir,
		$this->fileName
	);

	$this->fileConfigured = true;
}