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.GenericArrayof Event describing the events to relate to | 
            
              | result_event_templates | An GLib.GenericArrayof 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.Cancellableto cancel the operation or %NULL |