Joomla cachehandler Form Field Type
It provides a list of available cache handling options. The cachehandler field type extends the list type.
XML Definition
<field name="cache_handler"
type="cachehandler"
label="COM_CONFIG_FIELD_CACHE_HANDLER_LABEL"
description="COM_CONFIG_FIELD_CACHE_HANDLER_DESC"
filter="word">
</field>