private val source: BufferedSource,
  private val callback: Callback,
) {
  private var lastId: String? = null

  interface Callback {
    fun onEvent(
      id: String?,
      type: String?,
      data: String,
    )

    fun onRetryChange(timeMs: Long)
  }

  /**
   * Process the next event. This will result in a single call to [Callback.onEvent] *unless* the

                                              std::optional<std::string>)>
                         callback) {
  return WalkReachableFromTpuCluster(true, module, callback);
}

mlir::LogicalResult WalkReachableFromTpuCluster(
    ModuleOp module,
    std::function<WalkResult(Operation*, tf_device::ClusterOp)> callback) {
  auto with_host_op = [&](Operation* op, tf_device::ClusterOp tpu_cluster,

import mockwebserver3.MockWebServer
import org.junit.jupiter.api.Test

class DispatcherCleanupTest {
  @Test
  fun testFinish(server: MockWebServer) {
    val okhttp = OkHttpClient()
    val callback =
      object : Callback {
        override fun onFailure(
          call: Call,
          e: IOException,
        ) {}

        override fun onResponse(
          call: Call,
          response: Response,
        ) {

@Implements(DnsResolver::class)
class ShadowDnsResolver {
  var responder: (Request) -> Unit = {
    it.callback.onAnswer(listOf(), 0)
  }

  data class Request(
    val network: Network?,
    val domain: String,
    val nsType: Int,
    val flags: Int,
    val callback: DnsResolver.Callback<List<InetAddress>>,
  )

  @Implementation
  fun query(
    network: Network?,
    domain: String,

		}

		callbackCount++
		callbackChan <- callbackCount
	}

	p, e := esetup(t, devs, socket, "mock", callback)
	defer ecleanup(t, p, e)

	go e.client.Run()
	// Wait for the first callback to be issued.
	<-callbackChan

	p.Update(updated)

	// Wait for the second callback to be issued.
	<-callbackChan

	require.Equal(t, callbackCount, 2)
}

func TestAllocate(t *testing.T) {

import java.util.HashMap;
import java.util.Map;

import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.Configuration;
import javax.security.auth.login.LoginContext;

  override fun query(
    hostname: String,
    callback: AsyncDns.Callback,
  ) {
    try {
      resolver.query(
        network,
        hostname,
        dnsClass.type,
        DnsResolver.FLAG_EMPTY,
        executor,
        null,
        object : DnsResolver.Callback<List<InetAddress>> {
          override fun onAnswer(
            addresses: List<InetAddress>,

		sliding            bool
		context            func() (context.Context, context.CancelFunc)
		callback           func(calls int) (bool, error)
		cancelContextAfter int
		attemptsExpected   int
		errExpected        error
		timer              Timer
	}{
		{
			name: "condition successful is only one attempt",
			callback: func(attempts int) (bool, error) {
				return true, nil
			},
			attemptsExpected: 1,
		},

package main

/*
typedef void callback(char*);
extern void CallGoBigStack1(char*);
extern void bigStack(callback*);
*/
import "C"

func init() {
	register("BigStack", BigStack)
}

func BigStack() {
	// Create a large thread stack and call back into Go to test
	// if Go correctly determines the stack bounds.
	C.bigStack((*C.callback)(C.CallGoBigStack1))
}

//export goBigStack1

  /// Restores objects, invoking the callback with the node id in the
  /// saved_object_graph() and the corresponding TrackableObject from the
  /// trackable_object_graph(). The callback may use the variable_reader() but
  /// must not modify the underlying saved_object_graph().
  Status VisitObjectsToRestore(RestoreObjectsCallback callback);

 private:
  Status RecurseObjectsToRestore(