object : PushObserver {
        override fun onRequest(
          streamId: Int,
          requestHeaders: List<Header>,
        ) = false

        override fun onHeaders(
          streamId: Int,
          responseHeaders: List<Header>,
          last: Boolean,
        ) = false

        override fun onData(
          streamId: Int,
          source: BufferedSource,
          byteCount: Int,