byte[] buffer = new byte[10];
            int bytesRead = in.read(buffer);
            assertEquals(10, bytesRead, "Should read requested bytes");
            assertEquals("0123456789", new String(buffer, 0, bytesRead, "UTF-8"));

            // Read next chunk
            bytesRead = in.read(buffer);
            assertEquals(10, bytesRead, "Should read next chunk");

    }
    if (responseBodyBytes != null) {
      val responseBodyEnd: ResponseBodyEnd = listener.removeUpToEvent<ResponseBodyEnd>()
      MatcherAssert.assertThat(
        "response body bytes",
        responseBodyEnd.bytesRead,
        responseBodyBytes,
      )
    } else {
      assertThat(listener.recordedEventTypes()).doesNotContain("ResponseBodyEnd")
    }
  }

  private fun greaterThan(value: Long): Matcher<Long?> =