kotlinx.atomicfu.AtomicRef -> pv:
# {"id":"sourceFile","fileName":"AtomicFU.kt"}
    java.lang.Object value -> a
    java.util.concurrent.atomic.AtomicReferenceFieldUpdater FU -> b
    1:13:void <clinit>():129:129 -> <clinit>
    1:18:boolean java.util.concurrent.atomic.AtomicReferenceFieldUpdater.compareAndSet(java.lang.Object,java.lang.Object,java.lang.Object):0:0 -> a
    1:18:boolean compareAndSet(java.lang.Object,java.lang.Object):112 -> a
    1:7:java.lang.String toString():126:126 -> toString
