* corresponding entries will be dropped from the cache. If an error occurs while writing a cache
 * value, the edit will fail silently. Callers should handle other problems by catching
 * `IOException` and responding appropriately.
 *
 * @constructor Create a cache which will reside in [directory]. This cache is lazily initialized on

    val out = Buffer()
    Http2Writer(out, true).windowUpdate(expectedStreamId, windowSizeIncrement)
    return out
  }

  private fun assertHeaderBlock(): Http2Reader.Handler {
    return object : BaseTestHandler() {
      override fun headers(
        inFinished: Boolean,
        streamId: Int,
        associatedStreamId: Int,
        headerBlock: List<Header>,
      ) {

    assertThat(request.tag<Any>()).isSameAs(objectTag)
    assertThat(request.tag(Any::class)).isSameAs(objectTag)
    assertThat(request.tag(String::class)).isSameAs(stringTag)

    // TODO check for Jvm or handle Long/long correctly
//    assertThat(request.tag(Long::class)).isSameAs(longTag)
  }

  /** Confirm that we don't accidentally share the backing map between objects. */
  @Test
  fun tagsAreImmutable() {