{"ast_node_type":"struct","tokens":[{"end":103,"kind":"keyword","start":0,"text":"///"}]}
    /// Expressions that syntactically contain an "exterior" struct literal i.e., not surrounded by any
    /// parens or other delimiters, e.g., `X { y: 1 }`, `X { y: 1 }.method()`, `foo == X { y: 1 }` and