assertThat(client.webSocket!!.close(1000, "Bye!")).isTrue()
    client.webSocket!!.finishReader()
    taskFaker.runTasks()
    client.listener.assertClosed(1000, "Hello!")
    server.processNextFrame()
    server.listener.assertClosing(1000, "Bye!")
    server.webSocket!!.finishReader()
    server.listener.assertClosed(1000, "Bye!")
  }

  @Test
  fun emptyCloseInitiatesShutdown() {

hi????bye...

    if (webSocket == null) return;

    WebSocket webSocket;
    synchronized (this) {
      webSocket = this.webSocket;
    }

    if (webSocket != null) {
      webSocket.close(1000, "bye");
    }
  }

          webSocket: WebSocket,
          code: Int,
          reason: String,
        ) {
          webSocket.close(1000, null)
        }
      },
    )
    server.close(1001, "bye")
    clientListener.assertClosed(1001, "bye")
    clientListener.assertExhausted()
    serverListener.assertClosing(1000, "")
    serverListener.assertClosed(1000, "")
    serverListener.assertExhausted()
  }

  @Test

    assertThrows(NullPointerException.class, () -> result.hasNext());
    assertThrows(NullPointerException.class, () -> result.next());
    // There is no way to get "through" to the 3.  Buh-bye
  }

  public void testConcatVarArgsContainingNull() {
    assertThrows(
        NullPointerException.class,
        () ->
            Iterators.concat(

    assertThrows(NullPointerException.class, () -> result.hasNext());
    assertThrows(NullPointerException.class, () -> result.next());
    // There is no way to get "through" to the 3.  Buh-bye
  }

  public void testConcatVarArgsContainingNull() {
    assertThrows(
        NullPointerException.class,
        () ->
            Iterators.concat(

  `Curiouser and curiouser!' cried Alice (she was so much
surprised, that for the moment she quite forgot how to speak good
English); `now I'm opening out like the largest telescope that
ever was!  Good-bye, feet!' (for when she looked down at her
feet, they seemed to be almost out of sight, they were getting so
far off).  `Oh, my poor little feet, I wonder who will put on

<p>
Strings can be concatenated using the <code>+</code> operator
or the <code>+=</code> assignment operator:
</p>

<pre>
s := "hi" + string(c)
s += " and good bye"
</pre>

<p>
String addition creates a new string by concatenating the operands.
</p>

<h3 id="Comparison_operators">Comparison operators</h3>

<p>