error[E0599]: no method named `is_adult` found for enum `PersonAnon0` in the current scope
 --> $DIR/no_impl.rs:9:41
  |
1 | / #[serde_dhall_typegen::dhall_types("../../../tests/dhall/schema/",
2 | |     anonymous_enum_impl = false,
3 | | )]
  | |__- method `is_adult` not found for this
...
9 |           println!("{}", person.age_range.is_adult());
  |                                           ^^^^^^^^ method not found in `PersonAnon0`