/** Pre-parse and validate literal jpath expressions for maps
*
+ * @param[in] cs #CONF_SECTION that defined the map instance.
* @param[in] mod_inst module instance (unused).
* @param[in] proc_inst the cache structure to fill.
* @param[in] src Where to get the JSON data from.
/** Signal a channel that it is closing.
*
- * @param[in] ch the channel
+ * @param[in] ch The channel.
+ * @param[in] ack Whether we're acking a previous request to close the channel.
* @return
* - <0 on error
* - 0 on success