+#define BT_FIELD_TYPE_COMMON_STRUCTURE_FIELD_AT_INDEX(_ft, _index) \
+ (&g_array_index(((struct bt_field_type_common_structure *) (_ft))->fields, \
+ struct bt_field_type_common_structure_field, (_index)))
+
+#define BT_FIELD_TYPE_COMMON_VARIANT_CHOICE_AT_INDEX(_ft, _index) \
+ (&g_array_index(((struct bt_field_type_common_variant *) (_ft))->choices, \
+ struct bt_field_type_common_variant_choice, (_index)))
+