{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"T![-=]"}]}
                T![-=]  => BinaryOp::Assignment { op: Some(ArithOp::Sub) },
                T![*=]  => BinaryOp::Assignment { op: Some(ArithOp::Mul) },
                T![/=]  => BinaryOp::Assignment { op: Some(ArithOp::Div) },