if (existingRouteSelection != null && existingRouteSelection.hasNext()) {
      return planConnectToRoute(existingRouteSelection.next())
    }

    // Decide which proxy to use, if any. This may block in ProxySelector.select().
    var newRouteSelector = routeSelector
    if (newRouteSelector == null) {
      newRouteSelector =
        RouteSelector(
          address = address,
          routeDatabase = routeDatabase,

    primary: teal
    accent: amber
    toggle:
      icon: material/lightbulb-outline
      name: Switch to system preference
  features:
  - content.code.annotate
  - content.code.copy
  # - content.code.select
  - content.footnote.tooltips
  - content.tabs.link
  - content.tooltips
  - navigation.footer
  - navigation.indexes
  - navigation.instant
  - navigation.instant.prefetch
  # - navigation.instant.preview

        return result;
    }

    // ===================================================================================
    //                                                                              Select
    //                                                                              ======
    public int selectCount(CBCall<ScheduledJobCB> cbLambda) {
        return facadeSelectCount(createCB(cbLambda));
    }

	// suppose the maxopen is 1, g1 is creating record and g2 is querying record.
	// 1. g1 begin tx, g1 is requeue because of waiting for the system call, now `db.ConnPool` db.numOpen == 1.
	// 2. g2 select lock `conn.PrepareContext(ctx, query)`, now db.numOpen == db.maxOpen , wait for release.
	// 3. g1 tx exec insert, wait for unlock `conn.PrepareContext(ctx, query)` to finish tx and release.

}

/**
 * will also strip BOM from the source
 */
@Throws(IOException::class)
internal fun BufferedSource.readBomAsCharset(default: Charset): Charset {
  return when (select(UNICODE_BOMS)) {
    // a mapping from the index of encoding methods in UNICODE_BOMS to its corresponding encoding method
    0 -> UTF_8
    1 -> UTF_16BE
    2 -> UTF_32LE
    3 -> UTF_16LE
    4 -> UTF_32BE

	if err := checkValidCNIConfig(in.cfg, in.cniConfigFilepath); err != nil {
		return nil
	}

	// If a file we are watching has a change event, yield and let caller check validity
	select {
	case <-watcher.Events:
		// Something changed, and we must yield
		return nil
	case err := <-watcher.Errors:
		// We had a watch error - that's no good
		return err
	case <-ctx.Done():

						offlineEndpoints = append(offlineEndpoints, fmt.Errorf("%s is unreachable: %w", clnt, err))
					}
				} else {
					onlineServers++
				}
				mu.Unlock()
			}(clnt)
		}
		wg.Wait()

		select {
		case <-ctx.Done():
			return ctx.Err()
		default:
			// Sleep and stagger to avoid blocked CPU and thundering
			// herd upon start up sequence.

    proxySelector.assertRequests() // No proxy selector requests!
  }

  @Test fun proxySelectorReturnsNull() {
    val nullProxySelector: ProxySelector =
      object : ProxySelector() {
        override fun select(uri: URI): List<Proxy>? {
          assertThat(uri.host).isEqualTo(uriHost)
          return null
        }

        override fun connectFailed(
          uri: URI,
          socketAddress: SocketAddress,

  }

  @Test fun sharesRouteDatabase() {
    val client =
      OkHttpClient.Builder()
        .build()
    val proxySelector: ProxySelector =
      object : ProxySelector() {
        override fun select(uri: URI): List<Proxy> = listOf()

        override fun connectFailed(
          uri: URI,
          socketAddress: SocketAddress,
          e: IOException,
        ) {}
      }

  // Label query over pods whose evictions are managed by the disruption
  // budget.
  // A null selector will match no pods, while an empty ({}) selector will select
  // all pods within the namespace.
  // +patchStrategy=replace
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector selector = 2;