Query this with sexp, receiving a list of contacts UIDs which matched.
The call is finished by get_contacts_uids.end from the callback.
Note: sexp can be obtained through BookQuery, by
converting it to a string with to_string.
| this |
an BookClient |
| 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 |