Requests the calendar backend to create the object specified by the icalcomp argument.
Some backends would assign a specific UID to the newly created object, but this function does not modify the original icalcomp
if its UID changes. The call is finished by create_object.end from the callback.
| this |
an Client |
| icalcomp |
The component to create |
| 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 |