// Used to signal the need for new connections
	// a goroutine running connectionOpener() reads on this chan and
	// maybeOpenNewConnections sends on the chan (one send per needed connection)
	// It is closed during db.Close(). The close tells the connectionOpener
	// goroutine to exit.
	openerCh          chan struct{}
	closed            bool
	dep               map[finalCloser]depSet

import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

/**
 * Generators of different types of map and related collections, such as keys, entries and values.
 *
 * @author Hayward Chan
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class MapGenerators {
  public static class ImmutableMapGenerator extends TestStringMapGenerator {
    @Override

	toolCmd := &exec.Cmd{
		Path:   toolPath,
		Args:   args,
		Stdin:  os.Stdin,
		Stdout: os.Stdout,
		Stderr: os.Stderr,
	}
	err = toolCmd.Start()
	if err == nil {
		c := make(chan os.Signal, 100)
		signal.Notify(c)
		go func() {
			for sig := range c {
				toolCmd.Process.Signal(sig)
			}
		}()
		err = toolCmd.Wait()
		signal.Stop(c)
		close(c)
	}
	if err != nil {

	done := make(chan bool)
	AfterFunc(60*Second, func() { close(done) })

	// Set up a queuing goroutine to ping pong through the scheduler.
	inQ := make(chan func())
	outQ := make(chan func())

	defer close(inQ)

	wg.Add(1)
	go func() {
		defer wg.Done()
		defer close(outQ)
		var q []func()
		for {
			var sendTo chan func()
			var send func()
			if len(q) > 0 {

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Make sure this doesn't crash the compiler.
// Line 9 must end in EOF for this test (no newline).

package e

	}
	Println("did exec")
}

func stressExec() {
	gate := make(chan bool, 10) // max execs at once
	for {
		gate <- true
		go func() {
			doAnExec()
			<-gate
		}()
	}
}

func ringf(in <-chan int, out chan<- int, donec chan bool) {
	for {
		var n int
		select {
		case <-donec:
			return
		case n = <-in:
		}
		if n == 0 {

	go func() { // func1
		select {}
	}()
	go func() { // func2
		var c chan int
		c <- 0
	}()
	go func() { // func3
		var c chan int
		<-c
	}()
	done1 := make(chan bool)
	go func() { // func4
		<-done1
	}()
	done2 := make(chan bool)
	go func() { // func5
		done2 <- true
	}()
	c1 := make(chan int)
	c2 := make(chan int)
	go func() { // func6
		select {
		case <-c1:
		case <-c2:
		}

The handler function has this signature.

Sample handler:
```go
    handler :=  func(ctx context.Context, payload []byte, in <-chan []byte, out chan<- []byte) *RemoteErr {
        fmt.Println("Got request with initial payload", p, "from", GetCaller(ctx context.Context))
        fmt.Println("Subroute:", GetSubroute(ctx))
        for {
            select {

			return result, err
		}
		s.Authentication.RequestHeader.ClientCAFile = proxyCACertFile

		// give the kube api server an "identity" it can use to for request header auth
		// so that aggregated api servers can understand who the calling user is
		s.Authentication.RequestHeader.AllowedNames = []string{"ash", "misty", "brock"}

		// create private key

type Key struct {
	Name   string
	IsLast bool
}

// replayItems - Reads the items from the store and replays.
func replayItems[I any](store Store[I], doneCh <-chan struct{}, log logger, id string) <-chan Key {
	keyCh := make(chan Key)

	go func() {
		defer xioutil.SafeClose(keyCh)

		retryTicker := time.NewTicker(retryInterval)
		defer retryTicker.Stop()

		for {
			names, err := store.List()