Example 2. Using search functions, which return GSList.

    GSList * list = CST_search_by_folder(st, CST_FOLDER_CA);
    GSList * i;
    for (i = list; I != NULL; i = i->next)
    {
      printf(certID = %u\n, GPOINTER_TO_UINT(i->data));
    }
    g_slist_free(list);

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