{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"appears_in_output.regions.extend(generics.params.iter().map(|param|"}]}
        appears_in_output.regions.extend(generics.params.iter().map(|param| param.def_id));
    if appears_in_output.has_fully_capturing_opaque {
    }