Function walk_tree_to_function

dossier-ts/src/function.rs:253–257

(cursor: &mut TreeCursor)

    }

    fn walk_tree_to_function(cursor: &mut TreeCursor) {
        assert_eq!(cursor.node().kind(), "program");
        cursor.goto_first_child();
        assert_eq!(cursor.node().kind(), "function_declaration");
    }

    #[test]
    fn fqns() {