{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"generic_args.as_slice(Interner).first().and_then(|it|"}]}
                    generic_args.as_slice(Interner).first().and_then(|it| it.ty(Interner)).ok_or(
                let ty =
                        MirEvalError::InternalError(