*/
  private fun truncateViolently(
    builder: MockResponse.Builder,
    numBytesToKeep: Int,
  ): MockResponse.Builder {
    val response = builder.build()
    builder.onResponseEnd(ShutdownConnection)
    val headers = response.headers
    val fullBody = Buffer()
    response.body!!.writeTo(fullBody)
    val truncatedBody = Buffer()
    truncatedBody.write(fullBody, numBytesToKeep.toLong())