Begins retrieval of free/busy information from the calendar server as a list of CalComponent -s.
Connect to "free-busy-data" signal to receive chunks of free/busy components. The call is finished by
get_free_busy.end from the callback.
| start |
Start time for query |
| end |
End time for query |
| users |
List of users to retrieve free/busy information for |
| cancellable |
a Cancellable; can be null |
| callback |
callback to call when a result is ready |
| user_data |
user data for the |