public void testConcurrencyLevel_zero() {
    Interners.InternerBuilder builder = Interners.newBuilder();
    assertThrows(IllegalArgumentException.class, () -> builder.concurrencyLevel(0));
  }

  public void testConcurrencyLevel_negative() {
    Interners.InternerBuilder builder = Interners.newBuilder();
    assertThrows(IllegalArgumentException.class, () -> builder.concurrencyLevel(-42));
  }

    <version>4.0.0-beta-6-SNAPSHOT</version>

    <relativePath>../../</relativePath>
  </parent>

  <artifactId>maven-toolchain-builder</artifactId>

  <name>Maven Toolchain Builder (deprecated)</name>
  <description>The effective toolchain builder.</description>

  <dependencies>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-toolchain</artifactId>

    boolean isParallel = false;
    int characteristics = Spliterator.ORDERED | Spliterator.SIZED | Spliterator.NONNULL;
    long estimatedSize = 0L;
    ImmutableList.Builder<Spliterator<? extends T>> splitrsBuilder =
        new ImmutableList.Builder<>(streams.length);
    for (Stream<? extends T> stream : streams) {
      isParallel |= stream.isParallel();
      Spliterator<? extends T> splitr = stream.spliterator();

    This class is in the `logging-interceptor` artifact.
 *  New: `Headers.Builder.addUnsafeNonAscii()` allows non-ASCII values to be added without an
    immediate exception.
 *  New: Headers can be redacted in `HttpLoggingInterceptor`.
 *  New: `Headers.Builder` now accepts dates.
 *  New: OkHttp now accepts `java.time.Duration` for timeouts on Java 8+ and Android 26+.

server behaviour when ambiguous.

# Basic Usage

```kotlin
  private val client: OkHttpClient = OkHttpClient.Builder()
      .cache(Cache(
          directory = File(application.cacheDir, "http_cache"),
          // $0.05 worth of phone storage in 2020
          maxSize = 50L * 1024L * 1024L // 50 MiB
      ))
      .build()
```

## EventListener events 

  //  - For example, the "SHA-1" algorithm might be referred to as "SHA1".
  //  - The algorithm name is not case-sensitive.
  private static final ImmutableMap<String, HashFunction> ALGORITHMS =
      new ImmutableMap.Builder<String, HashFunction>()
          .put("MD5", Hashing.md5())
          .put("SHA", Hashing.sha1()) // Not the official name, but still works
          .put("SHA1", Hashing.sha1()) // Not the official name, but still works

    server.enqueue(
      MockResponse.Builder()
        .body("A")
        .bodyDelay(1, TimeUnit.SECONDS)
        .build(),
    )
    val client1 =
      client.newBuilder()
        .readTimeout(Duration.ofSeconds(2))
        .build()
    val call1 =
      client1
        .newCall(
          Request.Builder()
            .url(server.url("/"))
            .build(),
        )
    val client2 =

     * be set on builder to make it able to create session instances.
     */
    @Override
    public SessionBuilder get() {
        requireNonNull(repositorySystem, "repositorySystem");
        SessionBuilder builder = repositorySystem.createSessionBuilder();
        configureSessionBuilder(builder);
        return builder;
    }

        this.builder = builder;
    }

    @SuppressWarnings("deprecation")
    public void injectTransformedArtifacts(RepositorySystemSession session, MavenProject project) throws IOException {
        if (project.getFile() == null) {
            // If there is no build POM there is no reason to inject artifacts for the consumer POM.
            return;
        }
        if (Features.consumerPom(session.getUserProperties())) {

        settingsBuilder.searchTimeout(fessConfig.getIndexSearchTimeout());
        settingsBuilder.setSettingsIndexName(fessConfig.getIndexDocumentSuggestIndex() + "_suggest");
        suggester = Suggester.builder().settings(settingsBuilder).build(searchEngineClient, fessConfig.getIndexDocumentSuggestIndex());
        if (ComponentUtil.hasPopularWordHelper()) {
            popularWordHelper = ComponentUtil.getPopularWordHelper();
        }