Gets a list of all stored timezones by the this.
Only the returned list should be freed with g_list_free when no longer needed; the Timezone-s are owned by the this .
Note: The list can contain timezones previously stored in the cache, but removed from it since they were loaded, because these are freed only when also the this is freed.
| this |
an CalCache |
| out_timezones |
return location for the list of stored timezones |
| cancellable |
optional Cancellable object, or null |
|
Whether succeeded. |