oldValue:       utilpointer.Bool(true),
		newValue:       nil,
		expectError:    true, // populated by defaulting and required when feature is enabled
	}, {
		name:           "feature disabled, nil->nil",
		featureEnabled: false,
		oldValue:       nil,
		newValue:       nil,
		expectError:    false,
	}, {
		name:           "feature disabled, nil->set",
		featureEnabled: false,
		oldValue:       nil,

  }

  @CanIgnoreReturnValue
  @Override
  public boolean replace(K key, @CheckForNull V oldValue, V newValue) {
    checkNotNull(key);
    checkNotNull(newValue);
    if (oldValue == null) {
      return false;
    }
    int hash = hash(key);
    return segmentFor(hash).replace(key, hash, oldValue, newValue);
  }

  @CheckForNull
  @CanIgnoreReturnValue
  @Override

  }

  @CanIgnoreReturnValue
  @Override
  public boolean replace(K key, @CheckForNull V oldValue, V newValue) {
    checkNotNull(key);
    checkNotNull(newValue);
    if (oldValue == null) {
      return false;
    }
    int hash = hash(key);
    return segmentFor(hash).replace(key, hash, oldValue, newValue);
  }

  @CheckForNull
  @CanIgnoreReturnValue
  @Override

}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func TimerfdSettime(fd int, flags int, newValue *ItimerSpec, oldValue *ItimerSpec) (err error) {
	_, _, e1 := RawSyscall6(SYS_TIMERFD_SETTIME, uintptr(fd), uintptr(flags), uintptr(unsafe.Pointer(newValue)), uintptr(unsafe.Pointer(oldValue)), 0, 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

				LoadBalancer: networking.IngressLoadBalancerStatus{
					Ingress: []networking.IngressLoadBalancerIngress{
						{IP: "127.0.0.1", Hostname: "foo.bar.com"},
					},
				},
			},
		}
	}
	oldValue := newValid()
	newValue := newValid()
	newValue.Status = networking.IngressStatus{
		LoadBalancer: networking.IngressLoadBalancerStatus{
			Ingress: []networking.IngressLoadBalancerIngress{

      synchronized (mutex) {
        return delegate().putIfAbsent(key, value);
      }
    }

    @Override
    public boolean replace(K key, V oldValue, V newValue) {
      synchronized (mutex) {
        return delegate().replace(key, oldValue, newValue);
      }
    }

    @Override
    @CheckForNull
    public V replace(K key, V value) {
      synchronized (mutex) {

                  def newValue = providers.systemProperty('new-value').present
                  if (newValue) {
                        $newValue
                  } else {
                        $oldValue
                  }
               }
               into 'dest'
            }
        """

        run 'copy'

        when:
        run 'copy'

        then:

//sysnb	TimerfdCreate(clockid int, flags int) (fd int, err error)
//sysnb	TimerfdGettime(fd int, currValue *ItimerSpec) (err error)
//sysnb	TimerfdSettime(fd int, flags int, newValue *ItimerSpec, oldValue *ItimerSpec) (err error)
//sysnb	Tgkill(tgid int, tid int, sig syscall.Signal) (err error)
//sysnb	Times(tms *Tms) (ticks uintptr, err error)
//sysnb	Umask(mask int) (oldmask int)
//sysnb	Uname(buf *Utsname) (err error)

		c, _ := r.Cookie("Cycle")
		switch c.Value {
		case "0":
			want = map[string][]string{
				"Cookie1": {"OldValue1a", "OldValue1b"},
				"Cookie2": {"OldValue2"},
				"Cookie3": {"OldValue3a", "OldValue3b"},
				"Cookie4": {"OldValue4"},
				"Cycle":   {"0"},
			}
			SetCookie(w, &Cookie{Name: "Cycle", Value: "1", Path: "/"})