DefinitionTree {
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                    comments: [],
                },
                attributes: [],
                function: Keyword {
                    value: "function",
                    position: 1,
                },
                name: Identifier {
                    position: 10,
                    value: "foo",
                },
                templates: None,
                parameters: FunctionLikeParameterListDefinition {
                    comments: CommentGroup {
                        comments: [],
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                    left_parenthesis: 13,
                    parameters: CommaSeparated {
                        inner: [],
                        commas: [],
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                    right_parenthesis: 14,
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                    left_brace: 24,
                    statements: [
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                                comments: CommentGroup {
                                    comments: [],
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                                    position: 30,
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                                            comments: CommentGroup {
                                                comments: [],
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                                                comments: CommentGroup {
                                                    comments: [],
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                                                attributes: [],
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                                                    comments: CommentGroup {
                                                        comments: [],
                                                    },
                                                    left_parenthesis: 46,
                                                    arguments: CommaSeparated {
                                                        inner: [],
                                                        commas: [],
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                                                    right_parenthesis: 47,
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                                                extends: None,
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                                                            position: 49,
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                                                        interfaces: CommaSeparated {
                                                            inner: [
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                                                                    name: Identifier {
                                                                        position: 60,
                                                                        value: "Foo",
                                                                    },
                                                                    templates: None,
                                                                },
                                                                TemplatedIdentifier {
                                                                    name: Identifier {
                                                                        position: 65,
                                                                        value: "Bar",
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                                                                    templates: None,
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                                                            commas: [
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                                                    },
                                                ),
                                                body: ClassDefinitionBody {
                                                    left_brace: 69,
                                                    members: [],
                                                    right_brace: 70,
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                                semicolon: 71,
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                    right_brace: 73,
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    eof: 75,
}