{"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":".enumerate()"}]}
                    .enumerate()
                    .map(|field| field.ty(self.tcx, *in_ty_adt_generic_args))
                    .filter(|(_index, field_type)| find_param_in_ty((*field_type).into(), param)),