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++

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

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

        val hasMultipleJumpKinds: Boolean

}

private fun MutableList<TypeParameterDescriptor>.collectTypeParameters(innerClass: ClassifierDescriptorWithTypeParameters) {
    if (!innerClass.isInner) return
    val outerClass = innerClass.containingDeclaration as? ClassifierDescriptorWithTypeParameters ?: return
    addAll(outerClass.declaredTypeParameters)
    collectTypeParameters(outerClass)
}

  )

  abstract class Streams(
    val client: Boolean,
    val source: BufferedSource,
    val sink: BufferedSink,
  ) : Closeable {
    abstract fun cancel()
  }

  private inner class WriterTask : Task("$name writer") {
    override fun runOnce(): Long {
      try {
        if (writeOneFrame()) return 0L
      } catch (e: IOException) {
        failWebSocket(e = e, isWriter = true)
      }

      return Http2Connection(this)
    }
  }

  /**
   * Methods in this class must not lock FrameWriter. If a method needs to write a frame, create an
   * async task to do so.
   */
  inner class ReaderRunnable internal constructor(
    internal val reader: Http2Reader,
  ) : Http2Reader.Handler, () -> Unit {
    override fun invoke() {
      var connectionErrorCode = ErrorCode.INTERNAL_ERROR

    if (contentLength == -1L) return
    val body = newFixedLengthSource(contentLength)
    body.skipAll(Int.MAX_VALUE, MILLISECONDS)
    body.close()
  }

  /** An HTTP request body. */
  private inner class KnownLengthSink : Sink {
    private val timeout = ForwardingTimeout(sink.timeout())
    private var closed: Boolean = false

    override fun timeout(): Timeout = timeout

    override fun write(

 *   at okhttp3.Connection.connect(Connection.java)
 *   at okhttp3.Connection.connectAndSetOwner(Connection.java)
 * ```
 *
 * Follow up by pasting the public key hashes from the exception into the
 * certificate pinner's configuration:
 *
 * ```java
 * CertificatePinner certificatePinner = new CertificatePinner.Builder()
 *     .add("publicobject.com", "sha256/afwiKY3RxoMmLkuRW1l7QsPZTJPwDS2pdDROQjXw8ig=")

        }
    }

    inner class AnonymousInitializerBuilder {
        fun buildClassInitializer(firSymbol: FirAnonymousInitializerSymbol): KtClassInitializerSymbol {
            return symbolsCache.cache(firSymbol) { KtFirClassInitializerSymbol(firSymbol, analysisSession) }
        }
    }

    inner class TypeBuilder {
        fun buildKtType(coneType: ConeKotlinType): KtType {

  /**
   * 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)