/guava/android/guava/src/com/google/common/cache/LongAdder.java
private static final short serialVersionUID = 7249069246863182397L;
private static final long serialVersionUID = 7249069246863182397L;
import java.io.ObjectOutputStream; import java.io.Serializable; import java.util.concurrent.atomic.AtomicLong; @GwtCompatible(emulated = true) @ElementTypesAreNonnullByDefault final class LongAdder extends Striped64 implements Serializable, LongAddable { <extra_id_0> @Override final long fn(long v, long x) { return v + x; } public LongAdder() {} @Override