fn foo() {
    fn foo() {
        fn foo() {
            fn foo() {
                fn foo() {
                    fn foo() {
                        fn foo() {
                            fn foo() {
                                fn foo() {
                                    fn foo() {
                                        fn foo() {

                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}