+extern const bt_field_class_variant_option *
+bt_field_variant_borrow_selected_class_option_const(
+ const bt_field *field);
+
+extern const bt_field_class_variant_with_selector_unsigned_option *
+bt_field_variant_with_unsigned_selector_borrow_selected_class_option_const(
+ const bt_field *field);
+
+extern const bt_field_class_variant_with_selector_signed_option *
+bt_field_variant_with_signed_selector_borrow_selected_class_option_const(
+ const bt_field *field);
+