+/*
+ * bt_ctf_field_type_variant_set_tag_name: set a variant's tag name.
+ *
+ * @param variant Variant type.
+ * @param name Tag field name.
+ *
+ * Returns 0 on success, a negative value on error.
+ */
+extern int bt_ctf_field_type_variant_set_tag_name(
+ struct bt_ctf_field_type *variant, const char *name);
+