{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"hir::ClosureKind::Closure"}]}
                hir::ClosureKind::Closure => {
            ty::FnPtr(sig_tys, hdr) => match closure_kind {
                    let expected_sig = ExpectedSig { cause_span: None, sig: sig_tys.with(hdr) };