group_list_count

format

no

string

The format of the output for the API: text, json or xml. The default is text.

callback

no

string

This only works with Direct APIs. This is a JavaScript function that should be called after the API is completed. This function will be called with the response of the API.  Please note: It can only be used when requesting this API via AJAX request.  More Information can be found here.