Gets a list of objects from the calendar that match the query specified by the sexp argument, returning matching objects as
a list of Component-s.
The call is finished by get_object_list_as_comps.end from the callback.
| this |
an Client |
| sexp |
an S-expression representing the query |
| cancellable |
a Cancellable; can be null |
| callback |
callback to call when a result is ready |
| user_data |
user data for the |