/// Enable keep-alive
			{
				_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_KEEPALIVE, 1)

				// The time (in seconds) the connection needs to remain idle before
				// TCP starts sending keepalive probes
				_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, 15)

				// Number of probes.

    for (int i = 0; i < 11; i++) {
      limiter.acquire(); // #7, showing off the warmup starting from totally cold
    }

    // make sure the areas (times) remain the same, while permits are different
    assertEvents(
        "R0.00, R1.38, R1.13, R0.88, R0.63, R0.50, R0.50, R0.50", // #1
        "U4.50", // #2
        "R0.00, R1.38, R1.13", // #3, after that the rate changes

  /**
   * Returns a new {@code MutableClassToInstanceMap} instance backed by a given empty {@code
   * backingMap}. The caller surrenders control of the backing map, and thus should not allow any
   * direct references to it to remain accessible.
   */
  public static <B extends @Nullable Object> MutableClassToInstanceMap<B> create(
      Map<Class<? extends @NonNull B>, B> backingMap) {
    return new MutableClassToInstanceMap<>(backingMap);
  }

			for i := 0; i < messages; i++ {
				if atomic.LoadUint32((*uint32)(&c.state)) != StateConnected {
					cancel(ErrDisconnected)
					return
				}
				var next []byte
				next, remain, err = msgp.ReadBytesZC(remain)
				if err != nil {
					gridLogIf(ctx, fmt.Errorf("ws read merged: %w", err))
					cancel(ErrDisconnected)
					return
				}

				m.Payload = nil
				subID, _, err = m.parse(next)

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      separable from, or merely link (or bind by name) to the interfaces of,
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      represent, as a whole, an original work of authorship. For the purposes
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      "Contribution" shall mean any work of authorship, including