* The ChainSubscriber looks for API parameters which specify a nested or
* chained API call. For example:
*
- * @code
+ * ```
* $result = civicrm_api('Contact', 'create', array(
* 'version' => 3,
* 'first_name' => 'Amy',
* 'location_type_id' => 123,
* ),
* ));
- * @endcode
+ * ```
*
* The ChainSubscriber looks for any parameters of the form "api.Email.create";
* if found, it issues the nested API call (and passes some extra context --