Collection<V> collection) {
    if (collection instanceof SortedSet) {
      return Collections.unmodifiableSortedSet((SortedSet<V>) collection);
    } else if (collection instanceof Set) {
      return Collections.unmodifiableSet((Set<V>) collection);
    } else if (collection instanceof List) {
      return Collections.unmodifiableList((List<V>) collection);
    }

  }

  private static <E extends @Nullable Object> Collection<E> typePreservingCollection(
      Collection<E> collection, @Nullable Object mutex) {
    if (collection instanceof SortedSet) {
      return sortedSet((SortedSet<E>) collection, mutex);
    }
    if (collection instanceof Set) {
      return set((Set<E>) collection, mutex);
    }
    if (collection instanceof List) {
      return list((List<E>) collection, mutex);

  }

  private static <E extends @Nullable Object> Collection<E> typePreservingCollection(
      Collection<E> collection, @Nullable Object mutex) {
    if (collection instanceof SortedSet) {
      return sortedSet((SortedSet<E>) collection, mutex);
    }
    if (collection instanceof Set) {
      return set((Set<E>) collection, mutex);
    }
    if (collection instanceof List) {
      return list((List<E>) collection, mutex);

    checkNotNull(collection);
    return (collection instanceof EnumSet)
        ? EnumSet.complementOf((EnumSet<E>) collection)
        : makeComplementByHand(collection, type);
  }

  @J2ktIncompatible
  @GwtIncompatible
  private static <E extends Enum<E>> EnumSet<E> makeComplementByHand(
      Collection<E> collection, Class<E> type) {
    EnumSet<E> result = EnumSet.allOf(type);

  /**
   * Adds all elements in {@code iterator} to {@code collection}. The iterator will be left
   * exhausted: its {@code hasNext()} method will return {@code false}.
   *
   * @return {@code true} if {@code collection} was modified as a result of this operation
   */
  @CanIgnoreReturnValue
  public static <T extends @Nullable Object> boolean addAll(
      Collection<T> addTo, Iterator<? extends T> iterator) {
    checkNotNull(addTo);

CommandLineArgumentE; public ParsedCommandLine parse(Iterable) throws CommandLineArgumentE; public CommandLineParser allowMixedSubcommand(); public CommandLineParser allowUnknownOptions(); public void printUsage(Appendable); private static String join(java.util.Collection, String); public transient CommandLineOption option(String[]); } org/apache/maven/wrapper/cli/ParsedCommandLine.class package org.apache.maven.wrapper.cli; public synchronized class ParsedCommandLine { private final java.util.Map optionsByString;...

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;

     * The iteration order is the order in which the sources are declared in the POM file.
     * The returned collection is unmodifiable.
     *
     * @see #addSourceRoot(SourceRoot)
     */
    public Collection<SourceRoot> getSourceRoots() {
        return Collections.unmodifiableCollection(sources);
    }

    /**

      Iterable<? extends ListenableFuture<? extends T>> futures) {
    Collection<ListenableFuture<? extends T>> collection;
    if (futures instanceof Collection) {
      collection = (Collection<ListenableFuture<? extends T>>) futures;
    } else {
      collection = ImmutableList.copyOf(futures);
    }
    return (ListenableFuture<? extends T>[]) collection.toArray(new ListenableFuture<?>[0]);
  }

 *           }
 *         });
 * }
 *
 * <p>The returned cache implements all optional operations of the {@link LoadingCache} and {@link
 * Cache} interfaces. The {@code asMap} view (and its collection views) have <i>weakly consistent
 * iterators</i>. This means that they are safe for concurrent use, but if other threads modify the
 * cache after the iterator is created, it is undefined which of these changes, if any, are