}

/*
// RegisterStateless will register a stateless handler that serves
// []byte -> stream of ([]byte, error) requests.
func (m *Manager) RegisterStateless(id HandlerID, h StatelessHandler) error {
	if !id.valid() {
		return ErrUnknownHandler
	}
	if m.handlers.hasAny(id) && !id.isTestHandler() {
		return ErrHandlerAlreadyExists
	}

	m.handlers.stateless[id] = &h
	return nil
}
*/

  // either TensorFlow StatelessX or X op depending on the additional attribute.
  if (llvm::isa<mlir::TF::CaseOp, mlir::TF::IfOp, mlir::TF::WhileOp>(inst)) {
    auto stateless = inst->getAttrOfType<mlir::BoolAttr>("is_stateless");
    if (stateless && stateless.getValue())
      *node_def->mutable_op() = "Stateless" + node_def->op();
  }

  func.return %0, %1 : tensor<i32>, tensor<i32>
}

// -----

// Set stateless if the body contains only read-only side-effecting ops.

func.func private @cond(%arg: tensor<i32>, %handle: tensor<!tf_type.resource>) -> tensor<i1> {
  %0 = "tf.Const"() {value = dense<16> : tensor<i32> } : () -> tensor<i32>

  if (op->hasTrait<OpTrait::TF::CannotDuplicate>()) return false;

  // If the op has no memory side effects, it can be duplicated.
  if (isMemoryEffectFree(op)) return true;

  // If the op is marked stateless using the `is_stateless` attribute, that
  // attribute determines if the op can be duplicated.
  if (auto is_stateless = op->getAttrOfType<BoolAttr>("is_stateless"))
    return is_stateless.getValue();

	// StatelessHandlerFn must handle incoming stateless request.
	// A non-nil error value will be returned as RemoteErr(msg) to client.
	StatelessHandlerFn func(ctx context.Context, payload []byte, resp chan<- []byte) *RemoteErr

	// StatelessHandler is handlers for one to many requests,
	// where responses may be dropped.
	// Stateless requests provide no incoming stream and there is no flow control

	// Stateless stream:
	if m.Flags&FlagStateless != 0 {
		// Reject for now, so we can safely add it later.
		if true {
			gridLogIf(ctx, c.queueMsg(m, muxConnectError{Error: "Stateless streams not supported"}))
			return
		}

		var handler *StatelessHandler
		if subID == nil {
			handler = c.handlers.stateless[m.Handler]
		} else {

	cancelFn           context.CancelCauseFunc
	parent             *Connection
	respWait           chan<- Response
	respMu             sync.Mutex
	singleResp         bool
	closed             bool
	stateless          bool
	acked              bool
	init               bool
	deadline           time.Duration
	outBlock           chan struct{}
	subroute           *subHandlerID
	respErr            atomic.Pointer[error]

  /**
   * A strategy to translate T instances, to {@code numHashFunctions} bit indexes.
   *
   * <p>Implementations should be collections of pure functions (i.e. stateless).
   */
  interface Strategy extends java.io.Serializable {

    /**
     * Sets {@code numHashFunctions} bits of the given bit array, by hashing a user element.
     *

  /**
   * A strategy to translate T instances, to {@code numHashFunctions} bit indexes.
   *
   * <p>Implementations should be collections of pure functions (i.e. stateless).
   */
  interface Strategy extends java.io.Serializable {

    /**
     * Sets {@code numHashFunctions} bits of the given bit array, by hashing a user element.
     *

    }

    def "extracted stateless rules are cached"() {
        when:
        def fromFirstExtraction = extractor.extract(MutationRules)
        def fromSecondExtraction = extractor.extract(MutationRules)

        then:
        fromFirstExtraction.is(fromSecondExtraction)
    }

    def "extracted stateless abstract rules are cached"() {
        when: