*/
  @Override
  public int drainTo(Collection<? super E> c) {
    if (c == null) throw new NullPointerException();
    if (c == this) throw new IllegalArgumentException();
    final Monitor monitor = this.monitor;
    monitor.enter();
    try {
      int n = 0;

            

Reported by PMD.

                 */
  @Override
  public int drainTo(Collection<? super E> c, int maxElements) {
    if (c == null) throw new NullPointerException();
    if (c == this) throw new IllegalArgumentException();
    if (maxElements <= 0) return 0;
    final Monitor monitor = this.monitor;
    monitor.enter();
    try {

            

Reported by PMD.

               */
@CanIgnoreReturnValue // TODO(cpovirk): Consider being more strict.
public class MonitorBasedPriorityBlockingQueue<E> extends AbstractQueue<E>
    implements BlockingQueue<E> {

  // Based on revision 1.55 of PriorityBlockingQueue by Doug Lea, from
  // http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/main/java/util/concurrent/

  private static final long serialVersionUID = 5595510919245408276L;

            

Reported by PMD.

              
  private static final long serialVersionUID = 5595510919245408276L;

  final PriorityQueue<E> q;
  final Monitor monitor = new Monitor(true);
  private final Monitor.Guard notEmpty =
      new Monitor.Guard(monitor) {
        @Override
        public boolean isSatisfied() {

            

Reported by PMD.

                private static final long serialVersionUID = 5595510919245408276L;

  final PriorityQueue<E> q;
  final Monitor monitor = new Monitor(true);
  private final Monitor.Guard notEmpty =
      new Monitor.Guard(monitor) {
        @Override
        public boolean isSatisfied() {
          return !q.isEmpty();

            

Reported by PMD.

              
  final PriorityQueue<E> q;
  final Monitor monitor = new Monitor(true);
  private final Monitor.Guard notEmpty =
      new Monitor.Guard(monitor) {
        @Override
        public boolean isSatisfied() {
          return !q.isEmpty();
        }

            

Reported by PMD.

                @Override
  public boolean offer(E e) {
    final Monitor monitor = this.monitor;
    monitor.enter();
    try {
      boolean ok = q.offer(e);
      if (!ok) {
        throw new AssertionError();
      }

            

Reported by PMD.

                @Override
  public E poll() {
    final Monitor monitor = this.monitor;
    monitor.enter();
    try {
      return q.poll();
    } finally {
      monitor.leave();
    }

            

Reported by PMD.

                @Override
  public E poll(long timeout, TimeUnit unit) throws InterruptedException {
    final Monitor monitor = this.monitor;
    if (monitor.enterWhen(notEmpty, timeout, unit)) {
      try {
        return q.poll();
      } finally {
        monitor.leave();
      }

            

Reported by PMD.

                @Override
  public E take() throws InterruptedException {
    final Monitor monitor = this.monitor;
    monitor.enterWhen(notEmpty);
    try {
      return q.poll();
    } finally {
      monitor.leave();
    }

            

Reported by PMD.

               * the License.
 */

package com.google.common.base;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.annotations.Beta;
import com.google.common.annotations.GwtCompatible;

            

Reported by PMD.

               */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public final class Predicates {
  private Predicates() {}

  // TODO(kevinb): considering having these implement a VisitablePredicate
  // interface which specifies an accept(PredicateVisitor) method.


            

Reported by PMD.

                /** Returns a predicate that always evaluates to {@code true}. */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> alwaysTrue() {
    return ObjectPredicate.ALWAYS_TRUE.withNarrowedType();
  }

  /** Returns a predicate that always evaluates to {@code false}. */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> alwaysFalse() {

            

Reported by PMD.

                /** Returns a predicate that always evaluates to {@code false}. */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> alwaysFalse() {
    return ObjectPredicate.ALWAYS_FALSE.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is
   * null.

            

Reported by PMD.

                 */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> isNull() {
    return ObjectPredicate.IS_NULL.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is not
   * null.

            

Reported by PMD.

                 */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> notNull() {
    return ObjectPredicate.NOT_NULL.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the given predicate evaluates to {@code
   * false}.

            

Reported by PMD.

                /** @see Predicates#not(Predicate) */
  private static class NotPredicate<T extends @Nullable Object>
      implements Predicate<T>, Serializable {
    final Predicate<T> predicate;

    NotPredicate(Predicate<T> predicate) {
      this.predicate = checkNotNull(predicate);
    }


            

Reported by PMD.

                /** @see Predicates#and(Iterable) */
  private static class AndPredicate<T extends @Nullable Object>
      implements Predicate<T>, Serializable {
    private final List<? extends Predicate<? super T>> components;

    private AndPredicate(List<? extends Predicate<? super T>> components) {
      this.components = components;
    }


            

Reported by PMD.

                  @Override
    public boolean apply(@ParametricNullness T t) {
      // Avoid using the Iterator to avoid generating garbage (issue 820).
      for (int i = 0; i < components.size(); i++) {
        if (!components.get(i).apply(t)) {
          return false;
        }
      }
      return true;

            

Reported by PMD.

                  public boolean apply(@ParametricNullness T t) {
      // Avoid using the Iterator to avoid generating garbage (issue 820).
      for (int i = 0; i < components.size(); i++) {
        if (!components.get(i).apply(t)) {
          return false;
        }
      }
      return true;
    }

            

Reported by PMD.

                protected Table<String, Integer, Character> create(Object... data) {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> table = Tables.transpose(original);
    table.clear();
    populate(table, data);
    return table;
  }

  public void testTransposeTransposed() {

            

Reported by PMD.

                  return table;
  }

  public void testTransposeTransposed() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    assertSame(original, Tables.transpose(Tables.transpose(original)));
  }

  public void testPutOriginalModifiesTranspose() {

            

Reported by PMD.

                  assertSame(original, Tables.transpose(Tables.transpose(original)));
  }

  public void testPutOriginalModifiesTranspose() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);
    original.put(1, "foo", 'a');
    assertEquals((Character) 'a', transpose.get("foo", 1));
  }

            

Reported by PMD.

                public void testPutOriginalModifiesTranspose() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);
    original.put(1, "foo", 'a');
    assertEquals((Character) 'a', transpose.get("foo", 1));
  }

  public void testPutTransposeModifiesOriginal() {
    Table<Integer, String, Character> original = HashBasedTable.create();

            

Reported by PMD.

                public void testPutOriginalModifiesTranspose() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);
    original.put(1, "foo", 'a');
    assertEquals((Character) 'a', transpose.get("foo", 1));
  }

  public void testPutTransposeModifiesOriginal() {
    Table<Integer, String, Character> original = HashBasedTable.create();

            

Reported by PMD.

                  Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);
    original.put(1, "foo", 'a');
    assertEquals((Character) 'a', transpose.get("foo", 1));
  }

  public void testPutTransposeModifiesOriginal() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);

            

Reported by PMD.

                  assertEquals((Character) 'a', transpose.get("foo", 1));
  }

  public void testPutTransposeModifiesOriginal() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);
    transpose.put("foo", 1, 'a');
    assertEquals((Character) 'a', original.get(1, "foo"));
  }

            

Reported by PMD.

                public void testPutTransposeModifiesOriginal() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);
    transpose.put("foo", 1, 'a');
    assertEquals((Character) 'a', original.get(1, "foo"));
  }

  public void testTransposedViews() {
    Table<Integer, String, Character> original = HashBasedTable.create();

            

Reported by PMD.

                  Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);
    transpose.put("foo", 1, 'a');
    assertEquals((Character) 'a', original.get(1, "foo"));
  }

  public void testTransposedViews() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);

            

Reported by PMD.

                  assertEquals((Character) 'a', original.get(1, "foo"));
  }

  public void testTransposedViews() {
    Table<Integer, String, Character> original = HashBasedTable.create();
    Table<String, Integer, Character> transpose = Tables.transpose(original);
    original.put(1, "foo", 'a');
    assertSame(original.columnKeySet(), transpose.rowKeySet());
    assertSame(original.rowKeySet(), transpose.columnKeySet());

            

Reported by PMD.

               * @author Gregory Kick
 */
@GwtCompatible(emulated = true)
public class SingletonImmutableTableTest extends AbstractImmutableTableTest {
  private final ImmutableTable<Character, Integer, String> testTable =
      new SingletonImmutableTable<>('a', 1, "blah");

  public void testHashCode() {
    assertEquals(Objects.hashCode('a', 1, "blah"), testTable.hashCode());

            

Reported by PMD.

               */
@GwtCompatible(emulated = true)
public class SingletonImmutableTableTest extends AbstractImmutableTableTest {
  private final ImmutableTable<Character, Integer, String> testTable =
      new SingletonImmutableTable<>('a', 1, "blah");

  public void testHashCode() {
    assertEquals(Objects.hashCode('a', 1, "blah"), testTable.hashCode());
  }

            

Reported by PMD.

              @GwtCompatible(emulated = true)
public class SingletonImmutableTableTest extends AbstractImmutableTableTest {
  private final ImmutableTable<Character, Integer, String> testTable =
      new SingletonImmutableTable<>('a', 1, "blah");

  public void testHashCode() {
    assertEquals(Objects.hashCode('a', 1, "blah"), testTable.hashCode());
  }


            

Reported by PMD.

                private final ImmutableTable<Character, Integer, String> testTable =
      new SingletonImmutableTable<>('a', 1, "blah");

  public void testHashCode() {
    assertEquals(Objects.hashCode('a', 1, "blah"), testTable.hashCode());
  }

  public void testCellSet() {
    assertEquals(ImmutableSet.of(Tables.immutableCell('a', 1, "blah")), testTable.cellSet());

            

Reported by PMD.

                  assertEquals(Objects.hashCode('a', 1, "blah"), testTable.hashCode());
  }

  public void testCellSet() {
    assertEquals(ImmutableSet.of(Tables.immutableCell('a', 1, "blah")), testTable.cellSet());
  }

  public void testColumn() {
    assertEquals(ImmutableMap.of(), testTable.column(0));

            

Reported by PMD.

                  assertEquals(ImmutableSet.of(Tables.immutableCell('a', 1, "blah")), testTable.cellSet());
  }

  public void testColumn() {
    assertEquals(ImmutableMap.of(), testTable.column(0));
    assertEquals(ImmutableMap.of('a', "blah"), testTable.column(1));
  }

  public void testColumnKeySet() {

            

Reported by PMD.

                  assertEquals(ImmutableSet.of(Tables.immutableCell('a', 1, "blah")), testTable.cellSet());
  }

  public void testColumn() {
    assertEquals(ImmutableMap.of(), testTable.column(0));
    assertEquals(ImmutableMap.of('a', "blah"), testTable.column(1));
  }

  public void testColumnKeySet() {

            

Reported by PMD.

                  assertEquals(ImmutableMap.of('a', "blah"), testTable.column(1));
  }

  public void testColumnKeySet() {
    assertEquals(ImmutableSet.of(1), testTable.columnKeySet());
  }

  public void testColumnMap() {
    assertEquals(ImmutableMap.of(1, ImmutableMap.of('a', "blah")), testTable.columnMap());

            

Reported by PMD.

                  assertEquals(ImmutableSet.of(1), testTable.columnKeySet());
  }

  public void testColumnMap() {
    assertEquals(ImmutableMap.of(1, ImmutableMap.of('a', "blah")), testTable.columnMap());
  }

  public void testRow() {
    assertEquals(ImmutableMap.of(), testTable.row('A'));

            

Reported by PMD.

                  assertEquals(ImmutableMap.of(1, ImmutableMap.of('a', "blah")), testTable.columnMap());
  }

  public void testRow() {
    assertEquals(ImmutableMap.of(), testTable.row('A'));
    assertEquals(ImmutableMap.of(1, "blah"), testTable.row('a'));
  }

  public void testRowKeySet() {

            

Reported by PMD.

                 */
  @Override
  public int drainTo(Collection<? super E> c) {
    if (c == null) throw new NullPointerException();
    if (c == this) throw new IllegalArgumentException();
    final Monitor monitor = this.monitor;
    monitor.enter();
    try {
      int n = 0;

            

Reported by PMD.

                 */
  @Override
  public int drainTo(Collection<? super E> c, int maxElements) {
    if (c == null) throw new NullPointerException();
    if (c == this) throw new IllegalArgumentException();
    if (maxElements <= 0) return 0;
    final Monitor monitor = this.monitor;
    monitor.enter();
    try {

            

Reported by PMD.

               */
@CanIgnoreReturnValue // TODO(cpovirk): Consider being more strict.
public class MonitorBasedPriorityBlockingQueue<E> extends AbstractQueue<E>
    implements BlockingQueue<E> {

  // Based on revision 1.55 of PriorityBlockingQueue by Doug Lea, from
  // http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/main/java/util/concurrent/

  private static final long serialVersionUID = 5595510919245408276L;

            

Reported by PMD.

              
  private static final long serialVersionUID = 5595510919245408276L;

  final PriorityQueue<E> q;
  final Monitor monitor = new Monitor(true);
  private final Monitor.Guard notEmpty =
      new Monitor.Guard(monitor) {
        @Override
        public boolean isSatisfied() {

            

Reported by PMD.

                private static final long serialVersionUID = 5595510919245408276L;

  final PriorityQueue<E> q;
  final Monitor monitor = new Monitor(true);
  private final Monitor.Guard notEmpty =
      new Monitor.Guard(monitor) {
        @Override
        public boolean isSatisfied() {
          return !q.isEmpty();

            

Reported by PMD.

              
  final PriorityQueue<E> q;
  final Monitor monitor = new Monitor(true);
  private final Monitor.Guard notEmpty =
      new Monitor.Guard(monitor) {
        @Override
        public boolean isSatisfied() {
          return !q.isEmpty();
        }

            

Reported by PMD.

                @Override
  public boolean offer(E e) {
    final Monitor monitor = this.monitor;
    monitor.enter();
    try {
      boolean ok = q.offer(e);
      if (!ok) {
        throw new AssertionError();
      }

            

Reported by PMD.

                @Override
  public E poll() {
    final Monitor monitor = this.monitor;
    monitor.enter();
    try {
      return q.poll();
    } finally {
      monitor.leave();
    }

            

Reported by PMD.

                @Override
  public E poll(long timeout, TimeUnit unit) throws InterruptedException {
    final Monitor monitor = this.monitor;
    if (monitor.enterWhen(notEmpty, timeout, unit)) {
      try {
        return q.poll();
      } finally {
        monitor.leave();
      }

            

Reported by PMD.

                @Override
  public E take() throws InterruptedException {
    final Monitor monitor = this.monitor;
    monitor.enterWhen(notEmpty);
    try {
      return q.poll();
    } finally {
      monitor.leave();
    }

            

Reported by PMD.

              public class ForwardingSortedMapImplementsMapTest extends SortedMapInterfaceTest<String, Integer> {

  private static class SimpleForwardingSortedMap<K, V> extends ForwardingSortedMap<K, V> {
    final SortedMap<K, V> delegate;

    SimpleForwardingSortedMap(SortedMap<K, V> delegate) {
      this.delegate = delegate;
    }


            

Reported by PMD.

              public class ForwardingSortedMapImplementsMapTest extends SortedMapInterfaceTest<String, Integer> {

  private static class SimpleForwardingSortedMap<K, V> extends ForwardingSortedMap<K, V> {
    final SortedMap<K, V> delegate;

    SimpleForwardingSortedMap(SortedMap<K, V> delegate) {
      this.delegate = delegate;
    }


            

Reported by PMD.

                @Override
  protected SortedMap<String, Integer> makeEmptyMap() {
    return new SimpleForwardingSortedMap<>(
        new TreeMap<String, Integer>(Ordering.natural().nullsFirst()));
  }

  @Override
  protected SortedMap<String, Integer> makePopulatedMap() {
    final SortedMap<String, Integer> sortedMap = makeEmptyMap();

            

Reported by PMD.

                @Override
  protected SortedMap<String, Integer> makePopulatedMap() {
    final SortedMap<String, Integer> sortedMap = makeEmptyMap();
    sortedMap.put("one", 1);
    sortedMap.put("two", 2);
    sortedMap.put("three", 3);
    return sortedMap;
  }


            

Reported by PMD.

                protected SortedMap<String, Integer> makePopulatedMap() {
    final SortedMap<String, Integer> sortedMap = makeEmptyMap();
    sortedMap.put("one", 1);
    sortedMap.put("two", 2);
    sortedMap.put("three", 3);
    return sortedMap;
  }

  @Override

            

Reported by PMD.

                  final SortedMap<String, Integer> sortedMap = makeEmptyMap();
    sortedMap.put("one", 1);
    sortedMap.put("two", 2);
    sortedMap.put("three", 3);
    return sortedMap;
  }

  @Override
  protected String getKeyNotInPopulatedMap() throws UnsupportedOperationException {

            

Reported by PMD.

                }

  @Override
  protected String getKeyNotInPopulatedMap() throws UnsupportedOperationException {
    return "minus one";
  }

  @Override
  protected Integer getValueNotInPopulatedMap() throws UnsupportedOperationException {

            

Reported by PMD.

                }

  @Override
  protected Integer getValueNotInPopulatedMap() throws UnsupportedOperationException {
    return -1;
  }

  @Override
  public void testContainsKey() {

            

Reported by PMD.

                  return -1;
  }

  @Override
  public void testContainsKey() {
    try {
      super.testContainsKey();
    } catch (ClassCastException tolerated) {
    }

            

Reported by PMD.

                public void testContainsKey() {
    try {
      super.testContainsKey();
    } catch (ClassCastException tolerated) {
    }
  }

  @Override
  public void testEntrySetContainsEntryIncompatibleKey() {

            

Reported by PMD.

               * the License.
 */

package com.google.common.base;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.annotations.Beta;
import com.google.common.annotations.GwtCompatible;

            

Reported by PMD.

               */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public final class Predicates {
  private Predicates() {}

  // TODO(kevinb): considering having these implement a VisitablePredicate
  // interface which specifies an accept(PredicateVisitor) method.


            

Reported by PMD.

                /** Returns a predicate that always evaluates to {@code true}. */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> alwaysTrue() {
    return ObjectPredicate.ALWAYS_TRUE.withNarrowedType();
  }

  /** Returns a predicate that always evaluates to {@code false}. */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> alwaysFalse() {

            

Reported by PMD.

                /** Returns a predicate that always evaluates to {@code false}. */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> alwaysFalse() {
    return ObjectPredicate.ALWAYS_FALSE.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is
   * null.

            

Reported by PMD.

                 */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> isNull() {
    return ObjectPredicate.IS_NULL.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is not
   * null.

            

Reported by PMD.

                 */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> notNull() {
    return ObjectPredicate.NOT_NULL.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the given predicate evaluates to {@code
   * false}.

            

Reported by PMD.

                /** @see Predicates#not(Predicate) */
  private static class NotPredicate<T extends @Nullable Object>
      implements Predicate<T>, Serializable {
    final Predicate<T> predicate;

    NotPredicate(Predicate<T> predicate) {
      this.predicate = checkNotNull(predicate);
    }


            

Reported by PMD.

                /** @see Predicates#and(Iterable) */
  private static class AndPredicate<T extends @Nullable Object>
      implements Predicate<T>, Serializable {
    private final List<? extends Predicate<? super T>> components;

    private AndPredicate(List<? extends Predicate<? super T>> components) {
      this.components = components;
    }


            

Reported by PMD.

                  @Override
    public boolean apply(@ParametricNullness T t) {
      // Avoid using the Iterator to avoid generating garbage (issue 820).
      for (int i = 0; i < components.size(); i++) {
        if (!components.get(i).apply(t)) {
          return false;
        }
      }
      return true;

            

Reported by PMD.

                  public boolean apply(@ParametricNullness T t) {
      // Avoid using the Iterator to avoid generating garbage (issue 820).
      for (int i = 0; i < components.size(); i++) {
        if (!components.get(i).apply(t)) {
          return false;
        }
      }
      return true;
    }

            

Reported by PMD.

                @SuppressWarnings("JdkObsolete") // TODO(b/6160855): Switch GWT emulations to NavigableSet.
  static class ElementSet<E extends @Nullable Object> extends Multisets.ElementSet<E>
      implements SortedSet<E> {
    @Weak private final SortedMultiset<E> multiset;

    ElementSet(SortedMultiset<E> multiset) {
      this.multiset = multiset;
    }


            

Reported by PMD.

                @SuppressWarnings("JdkObsolete") // TODO(b/6160855): Switch GWT emulations to NavigableSet.
  static class ElementSet<E extends @Nullable Object> extends Multisets.ElementSet<E>
      implements SortedSet<E> {
    @Weak private final SortedMultiset<E> multiset;

    ElementSet(SortedMultiset<E> multiset) {
      this.multiset = multiset;
    }


            

Reported by PMD.

              
    @Override
    public Iterator<E> iterator() {
      return Multisets.elementIterator(multiset().entrySet().iterator());
    }

    @Override
    public Comparator<? super E> comparator() {
      return multiset().comparator();

            

Reported by PMD.

              
    @Override
    public Iterator<E> iterator() {
      return Multisets.elementIterator(multiset().entrySet().iterator());
    }

    @Override
    public Comparator<? super E> comparator() {
      return multiset().comparator();

            

Reported by PMD.

              
    @Override
    public Comparator<? super E> comparator() {
      return multiset().comparator();
    }

    @Override
    public SortedSet<E> subSet(@ParametricNullness E fromElement, @ParametricNullness E toElement) {
      return multiset().subMultiset(fromElement, CLOSED, toElement, OPEN).elementSet();

            

Reported by PMD.

              
    @Override
    public SortedSet<E> subSet(@ParametricNullness E fromElement, @ParametricNullness E toElement) {
      return multiset().subMultiset(fromElement, CLOSED, toElement, OPEN).elementSet();
    }

    @Override
    public SortedSet<E> headSet(@ParametricNullness E toElement) {
      return multiset().headMultiset(toElement, OPEN).elementSet();

            

Reported by PMD.

              
    @Override
    public SortedSet<E> subSet(@ParametricNullness E fromElement, @ParametricNullness E toElement) {
      return multiset().subMultiset(fromElement, CLOSED, toElement, OPEN).elementSet();
    }

    @Override
    public SortedSet<E> headSet(@ParametricNullness E toElement) {
      return multiset().headMultiset(toElement, OPEN).elementSet();

            

Reported by PMD.

              
    @Override
    public SortedSet<E> headSet(@ParametricNullness E toElement) {
      return multiset().headMultiset(toElement, OPEN).elementSet();
    }

    @Override
    public SortedSet<E> tailSet(@ParametricNullness E fromElement) {
      return multiset().tailMultiset(fromElement, CLOSED).elementSet();

            

Reported by PMD.

              
    @Override
    public SortedSet<E> headSet(@ParametricNullness E toElement) {
      return multiset().headMultiset(toElement, OPEN).elementSet();
    }

    @Override
    public SortedSet<E> tailSet(@ParametricNullness E fromElement) {
      return multiset().tailMultiset(fromElement, CLOSED).elementSet();

            

Reported by PMD.

              
    @Override
    public SortedSet<E> tailSet(@ParametricNullness E fromElement) {
      return multiset().tailMultiset(fromElement, CLOSED).elementSet();
    }

    @Override
    @ParametricNullness
    public E first() {

            

Reported by PMD.

                @CanIgnoreReturnValue
  public static <T> T checkNotNull(@CheckForNull T reference) {
    if (reference == null) {
      throw new NullPointerException();
    }
    return reference;
  }

  /**

            

Reported by PMD.

                @CanIgnoreReturnValue
  public static <T> T checkNotNull(@CheckForNull T reference, @CheckForNull Object errorMessage) {
    if (reference == null) {
      throw new NullPointerException(String.valueOf(errorMessage));
    }
    return reference;
  }

  /**

            

Reported by PMD.

                    String errorMessageTemplate,
      @CheckForNull @Nullable Object... errorMessageArgs) {
    if (reference == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, errorMessageArgs));
    }
    return reference;
  }

  /**

            

Reported by PMD.

                @CanIgnoreReturnValue
  public static <T> T checkNotNull(@CheckForNull T obj, String errorMessageTemplate, char p1) {
    if (obj == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, p1));
    }
    return obj;
  }

  /**

            

Reported by PMD.

                @CanIgnoreReturnValue
  public static <T> T checkNotNull(@CheckForNull T obj, String errorMessageTemplate, int p1) {
    if (obj == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, p1));
    }
    return obj;
  }

  /**

            

Reported by PMD.

                @CanIgnoreReturnValue
  public static <T> T checkNotNull(@CheckForNull T obj, String errorMessageTemplate, long p1) {
    if (obj == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, p1));
    }
    return obj;
  }

  /**

            

Reported by PMD.

                public static <T> T checkNotNull(
      @CheckForNull T obj, String errorMessageTemplate, @CheckForNull Object p1) {
    if (obj == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, p1));
    }
    return obj;
  }

  /**

            

Reported by PMD.

                public static <T> T checkNotNull(
      @CheckForNull T obj, String errorMessageTemplate, char p1, char p2) {
    if (obj == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, p1, p2));
    }
    return obj;
  }

  /**

            

Reported by PMD.

                public static <T> T checkNotNull(
      @CheckForNull T obj, String errorMessageTemplate, char p1, int p2) {
    if (obj == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, p1, p2));
    }
    return obj;
  }

  /**

            

Reported by PMD.

                public static <T> T checkNotNull(
      @CheckForNull T obj, String errorMessageTemplate, char p1, long p2) {
    if (obj == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, p1, p2));
    }
    return obj;
  }

  /**

            

Reported by PMD.

               */
@GwtCompatible(serializable = true, emulated = true)
@ElementTypesAreNonnullByDefault
public class ImmutableSetMultimap<K, V> extends ImmutableMultimap<K, V>
    implements SetMultimap<K, V> {
  /**
   * Returns a {@link Collector} that accumulates elements into an {@code ImmutableSetMultimap}
   * whose keys and values are the result of applying the provided mapping functions to the input
   * elements.

            

Reported by PMD.

              @GwtCompatible(serializable = true, emulated = true)
@ElementTypesAreNonnullByDefault
public class ImmutableSetMultimap<K, V> extends ImmutableMultimap<K, V>
    implements SetMultimap<K, V> {
  /**
   * Returns a {@link Collector} that accumulates elements into an {@code ImmutableSetMultimap}
   * whose keys and values are the result of applying the provided mapping functions to the input
   * elements.
   *

            

Reported by PMD.

                 * Returns an immutable multimap containing the given entries, in order. Repeated occurrences of
   * an entry (according to {@link Object#equals}) after the first are ignored.
   */
  public static <K, V> ImmutableSetMultimap<K, V> of(
      K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5) {
    ImmutableSetMultimap.Builder<K, V> builder = ImmutableSetMultimap.builder();
    builder.put(k1, v1);
    builder.put(k2, v2);
    builder.put(k3, v3);

            

Reported by PMD.

                 *
   * @since 2.0
   */
  public static final class Builder<K, V> extends ImmutableMultimap.Builder<K, V> {
    /**
     * Creates a new builder. The returned builder is equivalent to the builder generated by {@link
     * ImmutableSetMultimap#builder}.
     */
    public Builder() {

            

Reported by PMD.

                  @Override
    public Builder<K, V> putAll(Multimap<? extends K, ? extends V> multimap) {
      for (Entry<? extends K, ? extends Collection<? extends V>> entry :
          multimap.asMap().entrySet()) {
        putAll(entry.getKey(), entry.getValue());
      }
      return this;
    }


            

Reported by PMD.

                  public ImmutableSetMultimap<K, V> build() {
      Collection<Map.Entry<K, Collection<V>>> mapEntries = builderMap.entrySet();
      if (keyComparator != null) {
        mapEntries = Ordering.from(keyComparator).<K>onKeys().immutableSortedCopy(mapEntries);
      }
      return fromMapEntries(mapEntries, valueComparator);
    }
  }


            

Reported by PMD.

                  public ImmutableSetMultimap<K, V> build() {
      Collection<Map.Entry<K, Collection<V>>> mapEntries = builderMap.entrySet();
      if (keyComparator != null) {
        mapEntries = Ordering.from(keyComparator).<K>onKeys().immutableSortedCopy(mapEntries);
      }
      return fromMapEntries(mapEntries, valueComparator);
    }
  }


            

Reported by PMD.

                  if (multimap instanceof ImmutableSetMultimap) {
      @SuppressWarnings("unchecked") // safe since multimap is not writable
      ImmutableSetMultimap<K, V> kvMultimap = (ImmutableSetMultimap<K, V>) multimap;
      if (!kvMultimap.isPartialView()) {
        return kvMultimap;
      }
    }

    return fromMapEntries(multimap.asMap().entrySet(), valueComparator);

            

Reported by PMD.

                    }
    }

    return fromMapEntries(multimap.asMap().entrySet(), valueComparator);
  }

  /**
   * Returns an immutable multimap containing the specified entries. The returned multimap iterates
   * over keys in the order they were first encountered in the input, and the values for each key

            

Reported by PMD.

                    K key = entry.getKey();
      Collection<? extends V> values = entry.getValue();
      ImmutableSet<V> set = valueSet(valueComparator, values);
      if (!set.isEmpty()) {
        builder.put(key, set);
        size += set.size();
      }
    }


            

Reported by PMD.