super(transformer);
            this.stk = stk;
        }

        private ActivationFrame nextFrame(String property) {
            return new ActivationFrame(property, Optional.empty());
        }

        private <P> ActivationFrame nextFrame(String property, Function<P, InputLocationTracker> child) {
            @SuppressWarnings("unchecked")

    assertThat(synStream.headerBlock).isEqualTo(headerEntries("b", "banana"))
    val requestData = peer.takeFrame()
    assertArrayEquals("c3po".toByteArray(), requestData.data)
    val nextFrame = peer.takeFrame()
    assertThat(nextFrame.headerBlock).isEqualTo(headerEntries("e", "elephant"))
  }

  @Test fun clientCreatesStreamAndServerRepliesWithFin() {
    // Write the mocking script.
    peer.sendFrame().settings(Settings())