{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
    // as described in `SyntaxContextId::apply_mark`, so we ignore prepended opaque marks.
    // we don't want to pretend that the `macro_rules!` definition is in the `macro`
    // FIXME: This is only a guess and it doesn't work correctly for `macro_rules!`