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 It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.
|validate||Method to validate a group of fields.|
|addRulePath||Method to add a path to the list of rule include paths.|
jimport( 'joomla.form.formvalidator' );