DefinitionTree {
    definitions: [
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                comments: CommentGroup {
                    comments: [],
                },
                attributes: [],
                function: Keyword {
                    value: "function",
                    position: 0,
                },
                name: Identifier {
                    position: 9,
                    value: "main",
                },
                templates: None,
                parameters: FunctionLikeParameterListDefinition {
                    comments: CommentGroup {
                        comments: [],
                    },
                    left_parenthesis: 13,
                    parameters: CommaSeparated {
                        inner: [],
                        commas: [],
                    },
                    right_parenthesis: 14,
                },
                return_type: FunctionLikeReturnTypeDefinition {
                    colon: 15,
                    type_definition: Void(
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                            position: 17,
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                },
                body: BlockStatement {
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                        comments: [],
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                    left_brace: 22,
                    statements: [
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                                    comments: [],
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                                                        name: "$foo",
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                                                right_parenthesis: 35,
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                                    commas: [],
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                                block: BlockStatement {
                                    comments: CommentGroup {
                                        comments: [],
                                    },
                                    left_brace: 37,
                                    statements: [
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                                                comments: CommentGroup {
                                                    comments: [],
                                                },
                                                return: Keyword {
                                                    value: "return",
                                                    position: 47,
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                                                expression: Some(
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                                                            name: "$foo",
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                                                semicolon: 58,
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                                    right_brace: 64,
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                                            comments: [],
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                                                        name: "$foo",
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                                        block: BlockStatement {
                                            comments: CommentGroup {
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                                                            comments: [],
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                                                            position: 89,
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                                                        expression: Some(
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                                                                    name: "$foo",
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                                                        semicolon: 100,
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                                                    comments: [],
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                                                left_brace: 113,
                                                statements: [
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                                                                comments: [],
                                                            },
                                                            return: Keyword {
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                                                                position: 123,
                                                            },
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                                                                        name: "$foo",
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                                                right_brace: 140,
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                        ),
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                    right_brace: 142,
                },
            },
        ),
    ],
    eof: 144,
}