DefinitionTree {
    definitions: [
        Interface(
            InterfaceDefinition {
                comments: CommentGroup {
                    comments: [],
                },
                attributes: [],
                interface: Keyword {
                    value: "interface",
                    position: 0,
                },
                name: Identifier {
                    position: 10,
                    value: "foo",
                },
                templates: None,
                extends: None,
                body: InterfaceDefinitionBody {
                    left_brace: 14,
                    members: [
                        Method(
                            MethodDefinition {
                                comments: CommentGroup {
                                    comments: [],
                                },
                                attributes: [],
                                modifiers: ModifierGroupDefinition {
                                    position: 27,
                                    modifiers: [
                                        Public(
                                            Keyword {
                                                value: "public",
                                                position: 20,
                                            },
                                        ),
                                    ],
                                },
                                function: Keyword {
                                    value: "function",
                                    position: 27,
                                },
                                name: Identifier {
                                    position: 36,
                                    value: "bar",
                                },
                                templates: None,
                                parameters: MethodParameterListDefinition {
                                    comments: CommentGroup {
                                        comments: [],
                                    },
                                    left_parenthesis: 39,
                                    parameters: CommaSeparated {
                                        inner: [],
                                        commas: [],
                                    },
                                    right_parenthesis: 40,
                                },
                                return_type: Some(
                                    FunctionLikeReturnTypeDefinition {
                                        colon: 41,
                                        type_definition: Identifier(
                                            TemplatedIdentifier {
                                                name: Identifier {
                                                    position: 43,
                                                    value: "parent",
                                                },
                                                templates: None,
                                            },
                                        ),
                                    },
                                ),
                                constraints: None,
                                body: Abstract(
                                    49,
                                ),
                            },
                        ),
                    ],
                    right_brace: 51,
                },
            },
        ),
    ],
    eof: 53,
}