protected function getListByKey()
	{
		if($this->listKey == "")
			return $this->info;

		if (is_null($this->listKey) ||
			! isset($this->info[$this->listKey])
		)
		{
			throw new ListKeyNotSetException('The listKey is not found in the abstract list DTO');
		}

		return $this->info[$this->listKey];
	}