presto-main/src/main/java/io/prestosql/execution/buffer/SerializedPageReference.java/SerializedPageReference/SerializedPageReference
class SerializedPageReference:    public SerializedPageReference(SerializedPage serializedPage, int referenceCount, Runnable onDereference)
    {
        this.serializedPage = requireNonNull(serializedPage, "page is null");
        checkArgument(referenceCount > 0, "referenceCount must be at least 1");
        this.referenceCount = new AtomicInteger(referenceCount);
        this.onDereference = requireNonNull(onDereference, "onDereference is null");
    }