* the License.
 */

package com.google.common.base;

import com.google.common.annotations.GwtCompatible;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Determines a true or false value for a given input; a pre-Java-8 version of {@link
 * java.util.function.Predicate java.util.function.Predicate}.
 *

import java.lang.ref.WeakReference;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Arrays;
import java.util.Collections;
import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Unit test for {@link FinalizableReferenceQueue}.
 *
 * @author Bob Lee
 */
// - depends on details of GC and classloading
// - .class files aren't available

 */
@GwtIncompatible // not worth using in GWT for now
@ElementTypesAreNonnullByDefault
class CompactHashSet<E extends @Nullable Object> extends AbstractSet<E> implements Serializable {
  // TODO(user): cache all field accesses in local vars

  /** Creates an empty {@code CompactHashSet} instance. */
  public static <E extends @Nullable Object> CompactHashSet<E> create() {
    return new CompactHashSet<>();
  }

  /**

     *
     * @return the current working directory path, or null if not set
     */
    @Nullable
    Path cwd();

    /**
     * Returns the Maven home directory.
     * If not explicitly set, this value will be detected during parsing.
     *
     * @return the Maven home directory path, or null if not set
     */
    @Nullable
    Path mavenHome();

    /**
     * Returns the user's home directory.

  static <T extends @Nullable Object> GeneralRange<T> all(Comparator<? super T> comparator) {
    return new GeneralRange<>(comparator, false, null, OPEN, false, null, OPEN);
  }

  /**
   * Returns everything above the endpoint relative to the specified comparator, with the specified
   * endpoint behavior.
   */
  static <T extends @Nullable Object> GeneralRange<T> downTo(

import java.util.Comparator;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/** An ordering for a pre-existing comparator. */
@GwtCompatible(serializable = true)
@ElementTypesAreNonnullByDefault
final class ComparatorOrdering<T extends @Nullable Object> extends Ordering<T>
    implements Serializable {
  final Comparator<T> comparator;

import com.google.common.annotations.J2ktIncompatible;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.IOException;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A callback to be used with the streaming {@code readLines} methods.
 *
 * <p>{@link #processLine} will be called for each line that is read, and should return {@code
 * false} when you want to stop processing.

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@ElementTypesAreNonnullByDefault
public class AbstractListMultimapTester<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMultimapTester<K, V, ListMultimap<K, V>> {

  @Override
  protected void assertGet(K key, V... values) {
    assertGet(key, asList(values));
  }

  @Override
  protected void assertGet(K key, Collection<? extends V> values) {

import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Implementation of {@link Multimaps#filterEntries(SetMultimap, Predicate)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
final class FilteredEntrySetMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends FilteredEntryMultimap<K, V> implements FilteredSetMultimap<K, V> {

  private static final long serialVersionUID = 0;

  private final Function<? super F, ? extends @Nullable T> function;
  private final Equivalence<T> resultEquivalence;

  FunctionalEquivalence(
      Function<? super F, ? extends @Nullable T> function, Equivalence<T> resultEquivalence) {
    this.function = checkNotNull(function);
    this.resultEquivalence = checkNotNull(resultEquivalence);
  }

  @Override