import com.google.common.base.Predicate;
import java.util.Map.Entry;
import java.util.Set;
import org.jspecify.annotations.Nullable;

/**
 * Implementation of {@link Multimaps#filterKeys(SetMultimap, Predicate)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
final class FilteredKeySetMultimap<K extends @Nullable Object, V extends @Nullable Object>

          throw new TimeoutException(
              "Timeout waiting for the services to become healthy. The "
                  + "following services have not started: "
                  + Multimaps.filterKeys(servicesByState, in(ImmutableSet.of(NEW, STARTING))));
        }
        checkHealthy();
      } finally {
        monitor.leave();
      }
    }

    void awaitStopped() {

          throw new TimeoutException(
              "Timeout waiting for the services to become healthy. The "
                  + "following services have not started: "
                  + Multimaps.filterKeys(servicesByState, in(ImmutableSet.of(NEW, STARTING))));
        }
        checkHealthy();
      } finally {
        monitor.leave();
      }
    }

    void awaitStopped() {

 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.Maps.immutableEntry;
import static com.google.common.collect.Multimaps.filterKeys;
import static com.google.common.collect.Multimaps.synchronizedListMultimap;
import static com.google.common.collect.Multimaps.synchronizedMultimap;
import static com.google.common.collect.Multimaps.synchronizedSetMultimap;

  public static <K extends @Nullable Object, V extends @Nullable Object> Multimap<K, V> filterKeys(
      Multimap<K, V> unfiltered, Predicate<? super K> keyPredicate) {
    if (unfiltered instanceof SetMultimap) {
      return filterKeys((SetMultimap<K, V>) unfiltered, keyPredicate);
    } else if (unfiltered instanceof ListMultimap) {
      return filterKeys((ListMultimap<K, V>) unfiltered, keyPredicate);

   * Predicates.instanceOf(ArrayList.class)}, which is inconsistent with equals.
   */
  public static <K extends @Nullable Object, V extends @Nullable Object> Map<K, V> filterKeys(
      Map<K, V> unfiltered, Predicate<? super K> keyPredicate) {
    checkNotNull(keyPredicate);
    Predicate<Entry<K, ?>> entryPredicate = keyPredicateOnEntries(keyPredicate);

   * Predicates.instanceOf(ArrayList.class)}, which is inconsistent with equals.
   */
  public static <K extends @Nullable Object, V extends @Nullable Object> Map<K, V> filterKeys(
      Map<K, V> unfiltered, Predicate<? super K> keyPredicate) {
    checkNotNull(keyPredicate);
    Predicate<Entry<K, ?>> entryPredicate = keyPredicateOnEntries(keyPredicate);

              }
            }));
    assertEquals(newArrayList("a", "c", "e"), list);
  }

  // The Maps returned by Maps.filterEntries(), Maps.filterKeys(), and
  // Maps.filterValues() are not tested with removeIf() since Maps are not
  // Iterable.  Those returned by Iterators.filter() and Iterables.filter()
  // are not tested because they are unmodifiable.