Requests a calendar backend to send meeting information stored in icalcomp.
The backend can modify this component and request a send to particular users. The call is finished by
send_objects.end from the callback.
| this |
an Client |
| icalcomp |
An Component to be sent |
| opflags |
bit-or of OperationFlags |
| cancellable |
a Cancellable; can be null |
| callback |
callback to call when a result is ready |
| user_data |
user data for the |