{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"sym::atomic_xsub"}]}
                    sym::atomic_xsub => AtomicRmwBinOp::AtomicSub,
                    sym::atomic_xadd => AtomicRmwBinOp::AtomicAdd,
                    sym::atomic_and => AtomicRmwBinOp::AtomicAnd,