builder.build(CacheLoader.from(Suppliers.ofInstance(null)));
  }

  public void testDisableCaching() {
    // Functional test: assert that CacheBuilderSpec.disableCaching()
    // disables caching.  It's irrelevant how it does so.
    CacheBuilder<Object, Object> builder = CacheBuilder.from(CacheBuilderSpec.disableCaching());
    Object key = new Object();
    Object value = new Object();

     */
    @Nonnull
    Version resolveVersion(@Nonnull ArtifactCoordinate artifact);

    /**
     * Expands a version range to a list of matching versions, in ascending order.
     * For example, resolves "[3.8,4.0)" to "3.8", "3.8.1", "3.8.2".
     * The returned list of versions is only dependent on the configured repositories and their contents.

    }
    // Use a shuffled index array to ensure constant percentage of matching
    // characters
    List<Integer> list = Lists.newArrayList();
    for (int i = 0; i < length; i++) {
      list.add(i);
    }
    Collections.shuffle(list, rand);
    if (forceSlow) {
      // Move zero index to front to force a matching character (if percent > 0)
      list.set(list.indexOf(0), list.get(0));
      list.set(0, 0);

        checkPluginVersions(lineage, request, problems);

        // inheritance assembly
        Model resultModel = assembleInheritance(lineage, request, problems);

        // consider caching inherited model

        problems.setSource(resultModel);
        problems.setRootModel(resultModel);

        // model interpolation
        resultModel = interpolateModel(resultModel, request, problems);

    keyEquivalence = builder.getKeyEquivalence();
    this.entryHelper = entryHelper;

    int initialCapacity = Math.min(builder.getInitialCapacity(), MAXIMUM_CAPACITY);

    // Find power-of-two sizes best matching arguments. Constraints:
    // (segmentCount > concurrencyLevel)
    int segmentShift = 0;
    int segmentCount = 1;
    while (segmentCount < concurrencyLevel) {
      ++segmentShift;
      segmentCount <<= 1;

   * @throws IllegalCharsetNameException if a charset value is present, but illegal
   * @throws UnsupportedCharsetException if a charset value is present, but no support is available
   *     in this instance of the Java virtual machine
   */
  public Optional<Charset> charset() {
    // racy single-check idiom, this is safe because Optional is immutable.
    Optional<Charset> local = parsedCharset;
    if (local == null) {

@SuppressWarnings("serial") // uses writeReplace(), not default serialization
@ElementTypesAreNonnullByDefault
final class SingletonImmutableSet<E> extends ImmutableSet<E> {
  // We deliberately avoid caching the asList and hashCode here, to ensure that with
  // compressed oops, a SingletonImmutableSet packs all the way down to the optimal 16 bytes.

  final transient E element;

  SingletonImmutableSet(E element) {

import java.io.File;
import java.io.FilenameFilter;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

/**
 * File name filter that only accepts files matching a regular expression. This class is thread-safe
 * and immutable.
 *
 * @author Apple Chow
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault

        valueParser.parse(spec, key, value);
      }
    }

    return spec;
  }

  /** Returns a CacheBuilderSpec that will prevent caching. */
  public static CacheBuilderSpec disableCaching() {
    // Maximum size of zero is one way to block caching
    return CacheBuilderSpec.parse("maximumSize=0");
  }

  /** Returns a CacheBuilder configured according to this instance's specification. */

  // Create a second ClassLoader and use it to get a second version of the TestEnum class.
  // Run Enums.getIfPresent on that other TestEnum and then return a WeakReference containing the
  // new ClassLoader. If Enums.getIfPresent does caching that prevents the shadow TestEnum
  // (and therefore its ClassLoader) from being unloaded, then this WeakReference will never be
  // cleared.
  @J2ktIncompatible
  @GwtIncompatible // weak references