int
(*error) (Locker *locker,
          char const *message,
          int ret);

int
(*action) (Locker *locker,
           LockerAction action);

char const *
(*config_get) (Locker *locker,
               char const *section,
               char const *variable);

int
(*config_set) (Locker *locker,
               char const *section,
               char const *variable,
               char const *value);

LockerAuth *
(*init) (LockerAuthHelper *helper);

void
(*destroy) (LockerAuth *plugin);

GtkWidget *
(*get_widget) (LockerAuth *plugin);

typedef struct _LockerAuth LockerAuth;

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