{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"param_list.self_param().filter(|p|"}]}
        param_list.self_param().filter(|p| p.lifetime().is_none() && p.amp_token().is_some());
        // use the self if it's a reference and has no explicit lifetime
    // compute the location which implicitly has the same lifetime as the anonymous lifetime