body =
            object : ForwardingRequestBody(transferKind.newRequestBody("def")) {
              override fun writeTo(sink: BufferedSink) {
                sinkReference.set(sink)
                super.writeTo(sink)
              }
            },
        ),
      )
    assertThat(readAscii(response.body.byteStream(), Int.MAX_VALUE))
      .isEqualTo("abc")
    assertFailsWith<IllegalStateException> {

        override fun dispatch(request: RecordedRequest): MockResponse {
          if (peek().socketPolicy === DisconnectAfterRequest) {
            requestFinished.await()
          }
          return super.dispatch(request)
        }
      }
    dispatcher.enqueueResponse(MockResponse(body = "seed connection pool"))
    dispatcher.enqueueResponse(MockResponse(socketPolicy = DisconnectAfterRequest))