* \note Take care to set proper target root dir if needed. Either pass
* it via the constructor, or set it via setRoot(Pathname) method.
* The default location of the file is determined by
* \ref ZConfig::historyLogPath() which defaults to
* /var/log/zypp/history.
* \note Take care to set proper target root dir if needed. Either pass
* it via the constructor, or set it via setRoot(Pathname) method.
* The default location of the file is determined by
* \ref ZConfig::historyLogPath() which defaults to
* /var/log/zypp/history.