Get a list of URIs of subjects which frequently occur together with events matching event_templates. Possibly restricting to time_range or to URIs that occur as subject of events matching result_event_templates.
| time_range | TimeRange A time range in which the events should be considered in | 
| event_templates | An GLib.GenericArray of Event describing the events to relate to | 
| result_event_templates | An GLib.GenericArray of Event desrcibing the result to be returned | 
| storage_state | StorageState storage state | 
| num_events | int represteing the number of events that should be returned | 
| result_type | ResultType how the events should be grouped and sorted | 
| cancellable | a GLib.Cancellable to cancel the operation or %NULL |