[Vala] Quick Question about parameter handling

[Zsombor <gzsombor gmail com>]

Hi,

 I'm trying to create a vapi file for gnome-keyring, mapping most of the functions are easy, but unfortunately there is a lots of methods, which expects some 'out' parameters, and i can't figure out, how to do that: 
For example: 
GnomeKeyringResult gnome_keyring_get_default_keyring_sync (char **keyring);
or 
GnomeKeyringResult gnome_keyring_list_keyring_names_sync  (GList **keyrings);


Thanks,
 Zsombor