}

private fun checkSupportResponse(
  name: String,
  response: Response?,
) {
  response?.apply {
    require(networkResponse == null) { "$name.networkResponse != null" }
    require(cacheResponse == null) { "$name.cacheResponse != null" }
    require(priorResponse == null) { "$name.priorResponse != null" }
  }
}

fun Response.Builder.commonPriorResponse(priorResponse: Response?) =
  apply {

      apply {
        val maxAgeSeconds = maxAge.inWholeSeconds
        require(maxAgeSeconds >= 0) { "maxAge < 0: $maxAgeSeconds" }
        this.maxAgeSeconds = maxAgeSeconds.commonClampToInt()
      }

    fun maxStale(maxStale: Duration) =
      apply {
        val maxStaleSeconds = maxStale.inWholeSeconds
        require(maxStaleSeconds >= 0) { "maxStale < 0: $maxStaleSeconds" }

    flags: Int,
  ) {
    if (type != TYPE_WINDOW_UPDATE && logger.isLoggable(FINE)) {
      logger.fine(frameLog(false, streamId, length, type, flags))
    }
    require(length <= maxFrameSize) { "FRAME_SIZE_ERROR length > $maxFrameSize: $length" }
    require(streamId and 0x80000000.toInt() == 0) { "reserved bit set: $streamId" }
    sink.writeMedium(length)
    sink.writeByte(type and 0xff)
    sink.writeByte(flags and 0xff)

   *
   * If more than [maxRequests] requests are in flight when this is invoked, those requests will
   * remain in flight.
   */
  @get:Synchronized var maxRequests = 64
    set(maxRequests) {
      require(maxRequests >= 1) { "max < 1: $maxRequests" }
      synchronized(this) {
        field = maxRequests
      }
      promoteAndExecute()
    }

  /**

    }
}

private class KtFirResolveExtensionScope(
    private val analysisSession: KtFirAnalysisSession,
    private val tools: List<LLFirResolveExtensionTool>,
) : KtScope {
    init {
        require(tools.isNotEmpty())
    }

    override val token: KtLifetimeToken get() = analysisSession.token

    override fun getCallableSymbols(nameFilter: KtScopeNameFilter): Sequence<KtCallableSymbol> = withValidityAssertion {

    require(keepAliveDuration > 0L) { "keepAliveDuration <= 0: $keepAliveDuration" }
  }

  fun idleConnectionCount(): Int {
    return connections.count {
      synchronized(it) { it.calls.isEmpty() }
    }
  }

  fun connectionCount(): Int {
    return connections.size
  }

  /**

                // Stubbed top-level function IR symbols (from other source files in the module) require a parent facade class to be
                // generated, which requires a container source to be provided. Without a facade class, function IR symbols will have
                // an `IrExternalPackageFragment` parent, which trips up code generation during IR lowering.

        shortenOptions: ShortenOptions,
        classShortenStrategy: (KtClassLikeSymbol) -> ShortenStrategy,
        callableShortenStrategy: (KtCallableSymbol) -> ShortenStrategy
    ): ShortenCommand {
        require(!file.isCompiled) { "No sense to collect references for shortening in compiled file $file" }

        val declarationToVisit = file.findSmallestElementOfTypeContainingSelection<KtDeclaration>(selection)
            ?: file

        }

        return firLeaf
    }

    private fun computeCommonParent(statements: List<KtElement>): FirElement {
        require(statements.isNotEmpty())

        val parent = statements[0].parent as KtElement

        for (i in 1..<statements.size) {
            require(statements[i].parent == parent)
        }

        val firContainer = collectUseSiteContainers(parent, firResolveSession)?.lastOrNull()

    }

    context(KtAnalysisSession)
    override fun computeApplicability(candidate: KtCallableSymbol): KtExtensionApplicabilityResult {
        require(candidate is KtFirSymbol<*>)

        analysisSession.withValidityAssertion {
            val firSymbol = candidate.firSymbol as FirCallableSymbol<*>
            firSymbol.lazyResolveToPhase(FirResolvePhase.STATUS)