try {
      ensureAllConnectionsReleased()
      releaseClient()
    } catch (ae: AssertionError) {
      result += ae
    }

    try {
      if (taskQueuesWereIdle) {
        ensureAllTaskQueuesIdle()
      }
    } catch (ae: AssertionError) {
      result += ae
    }

    if (result != null) throw result
  }

  private fun releaseClient() {