{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"closure_sig_as_fn_ptr_ty:"}]}
                    closure_sig_as_fn_ptr_ty: closure_sig_as_fn_ptr_ty.expect_ty(),
                    closure_kind_ty: closure_kind_ty.expect_ty(),
                    tupled_upvars_ty: tupled_upvars_ty.expect_ty(),