if (assertionsEnabled && !taskRunner.lock.isHeldByCurrentThread) {
      throw AssertionError("Thread ${Thread.currentThread().name} MUST hold lock on $this")
    }
  }

  @Suppress("NOTHING_TO_INLINE")
  internal inline fun Any.assertThreadDoesntHoldLock() {
    if (assertionsEnabled && taskRunner.lock.isHeldByCurrentThread) {
      throw AssertionError("Thread ${Thread.currentThread().name} MUST NOT hold lock on $this")
    }
  }

  }

  private fun <T> finished(
    calls: Deque<T>,
    call: T,
  ) {
    val idleCallback: Runnable?
    this.withLock {
      if (!calls.remove(call)) throw AssertionError("Call wasn't in-flight!")
      idleCallback = this.idleCallback
    }

    val isRunning = promoteAndExecute()

    if (!isRunning && idleCallback != null) {
      idleCallback.run()
    }
  }

      byteCount: Int,
      last: Boolean,
    ): Boolean {
      events.add(AssertionError("onData"))
      notifyAll()
      return false
    }

    @Synchronized override fun onReset(
      streamId: Int,
      errorCode: ErrorCode,
    ) {
      events.add(AssertionError("onReset"))
      notifyAll()
    }
  }

  companion object {
    fun roundUp(