DefinitionTree {
    definitions: [
        Constant(
            ConstantDefinition {
                comments: CommentGroup {
                    comments: [],
                },
                const: Keyword {
                    value: "const",
                    position: 0,
                },
                type_definition: UnsignedInteger(
                    U8(
                        Keyword {
                            value: "u8",
                            position: 6,
                        },
                    ),
                ),
                name: Identifier {
                    position: 9,
                    value: "FOO",
                },
                equals: 13,
                value: Literal(
                    Integer(
                        LiteralInteger {
                            comments: CommentGroup {
                                comments: [],
                            },
                            value: "1",
                            position: 15,
                        },
                    ),
                ),
                semicolon: 16,
            },
        ),
        Constant(
            ConstantDefinition {
                comments: CommentGroup {
                    comments: [],
                },
                const: Keyword {
                    value: "const",
                    position: 19,
                },
                type_definition: UnsignedInteger(
                    U8(
                        Keyword {
                            value: "u8",
                            position: 25,
                        },
                    ),
                ),
                name: Identifier {
                    position: 28,
                    value: "BAR",
                },
                equals: 32,
                value: Identifier(
                    Identifier {
                        position: 34,
                        value: "FOO",
                    },
                ),
                semicolon: 37,
            },
        ),
    ],
    eof: 39,
}