From Joomla! Documentation
The "API15" namespace is an archived namespace. This page contains information for a Joomla! version which is no longer supported. It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.
|__construct||Constructor tries to load the bz2 extension of not loaded|
|extract||Extract a Bzip2 compressed file to a given path|
jimport( 'joomla.filesystem.archive.bzip2' );