new TestStringMultisetGenerator() {
                  @Override
                  protected Multiset<String> create(String[] elements) {
                    return new StandardImplForwardingSortedMultiset<>(
                        TreeMultiset.create(asList(elements)));
                  }

                  @Override
                  public List<String> order(List<String> insertionOrder) {

  public void testEquals_containingNullKey() {
    Collection<Entry<K, V>> entries = getSampleEntries(getNumEntries() - 1);
    entries.add(entry(null, v3()));

    resetContainer(getSubjectGenerator().create(entries.toArray()));
    assertTrue(
        "A Map should equal any other Map containing the same entries,"
            + " even if some keys are null.",
        getMap().equals(newHashMap(entries)));
  }

    suite.addTest(
        ListTestSuiteBuilder.using(
                new TestStringListGenerator() {

                  @Override
                  protected List<String> create(String[] elements) {
                    return new StandardImplForwardingList<>(Lists.newArrayList(elements));
                  }
                })

                // create it if necessary
                openFunction = OPEN_FN_TRUNC | OPEN_FN_CREATE;
            } else {
                openFunction = OPEN_FN_TRUNC;
            }
        } else {
            // don't truncate the file
            if(( flags & SmbFile.O_CREAT ) == SmbFile.O_CREAT ) {
                // create it if necessary

            if ( this.filter == null ) {
                try {
                    return adapt(n);
                }
                catch ( MalformedURLException e ) {
                    log.error("Failed to create child URL", e);
                    continue;
                }
            }
            try ( SmbResource nr = adapt(n) ) {
                if ( !this.filter.accept(nr) ) {
                    continue;

        });

        // Note: here, type decides is artifact added to "build path" (for example during resolution)
        // and "build path" is intermediate data that is used to create actual Java classpath/modulepath
        // but to create those, proper filtering should happen via Type properties.
    }

    @Override
    public void addHandlers(Map<String, ArtifactHandler> handlers) {

 * @since 21.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class CollectorTester<
    T extends @Nullable Object, A extends @Nullable Object, R extends @Nullable Object> {
  /**
   * Creates a {@code CollectorTester} for the specified {@code Collector}. The result of the {@code
   * Collector} will be compared to the expected value using {@link Object#equals}.
   */

     *
     * @param file
     *            ファイルパス。{@literal null}や空文字列であってはいけません
     * @return 指定されたZipファイルを読み取るための<code>ZipFile</code>
     */
    public static ZipFile create(final String file) {
        assertArgumentNotEmpty("file", file);

        try {
            return new ZipFile(file);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }

        addTraverserFactory("zip", (url, rootPackage,
                rootDir) -> new JarFileTraverser(JarFileUtil.create(new File(ZipFileUtil.toZipFilePath(url))), rootPackage, rootDir));
        addTraverserFactory("code-source",
                (url, rootPackage, rootDir) -> new JarFileTraverser(URLUtil.create("jar:file:" + url.getPath()), rootPackage, rootDir));
        addTraverserFactory("vfszip", VfsZipTraverser::new);
    }

    /**

import com.google.common.collect.BiMap;
import com.google.common.collect.testing.TestContainerGenerator;
import java.util.Map.Entry;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Creates bimaps, containing sample entries, to be tested.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault