From Joomla! Documentation
The "API16" 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 It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.
JCachePage is a concrete cache handler. It caches and returns the body of the page.
|get||Get the cached page data|
|store||Stop the cache buffer and store the cached data|
jimport( 'joomla.cache.handler.page' );