{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"sym::sub_with_overflow"}]}
                            sym::sub_with_overflow => BinOp::SubWithOverflow,
                            sym::add_with_overflow => BinOp::AddWithOverflow,
                            sym::mul_with_overflow => BinOp::MulWithOverflow,