DefinitionTree {
    definitions: [
        Enum(
            Unit(
                UnitEnumDefinition {
                    comments: CommentGroup {
                        comments: [],
                    },
                    attributes: [],
                    enum: Keyword {
                        value: "enum",
                        position: 0,
                    },
                    name: Identifier {
                        position: 5,
                        value: "Foo",
                    },
                    implements: None,
                    body: UnitEnumBodyDefinition {
                        left_brace: 9,
                        members: [
                            Case(
                                UnitEnumCaseDefinition {
                                    attributes: [],
                                    case: Keyword {
                                        value: "case",
                                        position: 15,
                                    },
                                    name: Identifier {
                                        position: 20,
                                        value: "Bar",
                                    },
                                    semicolon: 23,
                                },
                            ),
                            Case(
                                UnitEnumCaseDefinition {
                                    attributes: [],
                                    case: Keyword {
                                        value: "case",
                                        position: 29,
                                    },
                                    name: Identifier {
                                        position: 34,
                                        value: "Baz",
                                    },
                                    semicolon: 37,
                                },
                            ),
                        ],
                        right_brace: 39,
                    },
                },
            ),
        ),
    ],
    eof: 42,
}