Todo List
BaseRule | --GroupRule | --GroupFilter
Callback method should have the following signature:
static function myCallbackMethod('group_id', 'group_title') return 'group_new_title'
[line 507]
Syntax is:
array('PluginClass', 'myCallbackMethod')
GroupFilter __construct( string $groupId, array $callback)
void applyRule( TableGroup $group, array $params)