char* gom_set_string_for_locale(char** data, const char* locale_str);
void gom_set_unknown(const char* unknown);
+struct xref_value* gom_set_xref(struct xref_value** data, const char* xref);
+struct xref_list* gom_add_xref(struct xref_list** data, const char* xref);
+int gom_remove_xref(struct xref_list** data, const char* xref);
+
+struct address* gom_add_address(struct address** obj);
+int gom_delete_address(struct address** obj);
+
+struct place* gom_add_place(struct place** obj);
+int gom_delete_place(struct place** obj);
+
+struct change_date* gom_add_change_date(struct change_date** obj);
+int gom_delete_change_date(struct change_date** obj);
+int gom_update_timestamp(struct change_date** obj, time_t t);
+
#ifdef __cplusplus
}
#endif