{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":".chain((0..).map(|i|"}]}
            .chain((0..).map(|i| format!("P{i}")))
            .map(|c| c.to_string())
            .find(|s| !generics.params.iter().any(|param| param.name.ident().as_str() == s))