presto-main/src/main/java/io/prestosql/operator/SpilledLookupSourceHandle.java/SpilledLookupSourceHandle/setState
class SpilledLookupSourceHandle:    @GuardedBy("this")
    private void setState(State newState)
    {
        //this.state.set(requireNonNull(newState, "newState is null"));
        this.state = requireNonNull(newState, "newState is null");
    }