{"ast_node_type":"variable","tokens":[{"end":94,"kind":"keyword","start":0,"text":"let"}]}
        let native_syntax = self.native_syntax.get(&file_id).into_iter().flat_map(|(_, d)| d);
    ) -> impl Iterator<Item = &lsp_types::Diagnostic> {
        let native_semantic = self.native_semantic.get(&file_id).into_iter().flat_map(|(_, d)| d);