{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"ImplTraitPosition::ClosureReturn"}]}
            ImplTraitPosition::ClosureReturn => "closure return types",
            ImplTraitPosition::ExternFnReturn => "`extern fn` return types",
            ImplTraitPosition::PointerReturn => "`fn` pointer return types",