{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"///"}]}
    /// scope, `diag.long_ty_path()` should be called once somewhere close by.
    /// As a rule of thumb, if you see or add at least one `tcx.short_string()` call anywhere, in a
    pub fn long_ty_path(&mut self) -> &mut Option<PathBuf> {