/**
   * A source that reads the incoming data frames of a stream. Although this class uses
   * synchronization to safely receive incoming data frames, it is not intended for use by multiple
   * readers.
   */
  inner class FramingSource internal constructor(
    /** Maximum number of bytes to buffer before reporting a flow control error. */
    private val maxByteCount: Long,
    /**

    /**
     * @return How many qualifiers needs to be dropped from [wholeType] to get [nestedType].
     *
     * Example: to get `foo.bar` from `foo.bar.Baz.Inner`, you need to drop 2 qualifiers (`Inner` and `Baz`).
     */
    private fun countQualifiersToDrop(wholeType: KtUserType, nestedType: KtUserType): Int {
        val qualifierIndex = generateSequence(wholeType) { it.qualifier }.indexOf(nestedType)

* Fix callback handling for sub-routers. PR [#792](https://github.com/tiangolo/fastapi/pull/792) by [@jekirl](https://github.com/jekirl).
* Fix typos. PR [#784](https://github.com/tiangolo/fastapi/pull/784) by [@kkinder](https://github.com/kkinder).
* Add 4 Japanese articles to [External Links](https://fastapi.tiangolo.com/external-links/). PR [#783](https://github.com/tiangolo/fastapi/pull/783) by [@HymanZHAN](https://github.com/HymanZHAN).

) : KtNamedClassOrObjectSymbol(), KtFe10DescMemberSymbol<ClassDescriptor> {
    override val name: Name
        get() = withValidityAssertion { descriptor.name }

    override val isInner: Boolean
        get() = withValidityAssertion { descriptor.isInner }

    override val isData: Boolean
        get() = withValidityAssertion { descriptor.isData }

    override val isInline: Boolean

    fun start()
  }

  private object TestThreadSerialTask : SerialTask {
    override fun start() = error("unexpected call")
  }

  inner class RunnableSerialTask(
    private val runnable: Runnable,
  ) : SerialTask {
    override fun start() {
      taskRunner.assertThreadHoldsLock()
      require(currentTask == this)
      activeThreads++

        STATIC,

        /**
         * A scope containing both non-static and static members. A smart combined scope (as opposed to a naive combination of [KtScope]s
         * with [getCompositeScope]) avoids duplicate inner classes, as they are contained in non-static and static scopes.
         *
         * A proper combined declared member scope kind also makes it easier to cache combined scopes directly (if needed).
         */

            stack.addLast(element)
            try {
                block()
            } finally {
                stack.removeLast()
            }
        }
    }

    private inner class FirElementCollector : FirDefaultVisitorVoid() {
        val hasJumps: Boolean
            get() = firReturnTargets.isNotEmpty() || firLoopJumpTargets.isNotEmpty()

        val hasMultipleJumpKinds: Boolean

            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.INNER_ON_TOP_LEVEL_SCRIPT_CLASS.errorFactory) { firDiagnostic ->
        InnerOnTopLevelScriptClassErrorImpl(
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.INNER_ON_TOP_LEVEL_SCRIPT_CLASS.warningFactory) { firDiagnostic ->
        InnerOnTopLevelScriptClassWarningImpl(

        (if (forWebSocket) "web socket" else "call") +
        " to " + redactedUrl()
    )
  }

  internal fun redactedUrl(): String = originalRequest.url.redact()

  inner class AsyncCall(
    private val responseCallback: Callback,
  ) : Runnable {
    @Volatile var callsPerHost = AtomicInteger(0)
      private set

    fun reuseCallsPerHostFrom(other: AsyncCall) {

  private fun gzip(bytes: String): Buffer {
    val bytesOut = Buffer()
    val sink = GzipSink(bytesOut).buffer()
    sink.writeUtf8(bytes)
    sink.close()
    return bytesOut
  }

  internal inner class AsyncRequest(
    val path: String,
    val countDownLatch: CountDownLatch,
  ) : Runnable {
    override fun run() {
      try {
        val call =
          client.newCall(