import static java.util.Collections.emptyIterator;
import static java.util.Collections.singleton;

import com.google.common.annotations.GwtCompatible;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

/**
 * Unit test for {@link Helpers}.
 *

import com.google.common.collect.testing.UnhashableObject;
import java.util.Map;
import org.jspecify.annotations.NullUnmarked;

@GwtIncompatible // GWT's ImmutableMap emulation is backed by java.util.HashMap.
@NullUnmarked
public class RegularImmutableMapWithUnhashableValuesMapInterfaceTest
    extends AbstractImmutableMapMapInterfaceTest<Integer, UnhashableObject> {
  @Override

import com.google.common.collect.testing.google.MultisetTestSuiteBuilder;
import com.google.common.collect.testing.google.TestStringMultisetGenerator;
import java.io.Serializable;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.atomic.AtomicInteger;
import junit.framework.Test;
import junit.framework.TestCase;

import static org.junit.Assert.assertThrows;

import com.google.errorprone.annotations.concurrent.GuardedBy;
import java.lang.reflect.Method;
import java.net.URLClassLoader;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CancellationException;
import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import junit.framework.TestCase;

import com.google.common.annotations.J2ktIncompatible;
import java.io.Serializable;
import java.lang.ref.WeakReference;
import java.lang.reflect.Field;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import java.util.WeakHashMap;
import org.jspecify.annotations.Nullable;

/**
 * Utility methods for working with {@link Enum} instances.
 *
 * @author Steve McKay
 * @since 9.0
 */

 * under the License.
 */
package org.apache.maven.cling.invoker;

import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Consumer;

import org.apache.maven.api.ProtoSession;
import org.apache.maven.api.cli.InvokerException;

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.cling.invoker.mvnup.goals;

import java.nio.file.Path;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.stream.Stream;

import eu.maveniverse.domtrip.Document;

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.project.inheritance.t02;

import java.io.File;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.model.Build;
import org.apache.maven.model.Plugin;
import org.apache.maven.model.PluginExecution;
import org.apache.maven.project.MavenProject;

import com.google.common.collect.ForwardingSet;
import com.google.common.collect.Iterators;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import com.google.errorprone.annotations.DoNotCall;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.jspecify.annotations.NonNull;
import org.jspecify.annotations.Nullable;

/**

import com.google.common.collect.testing.UnhashableObject;
import java.util.Map;
import org.jspecify.annotations.NullUnmarked;

@GwtIncompatible // GWT's ImmutableMap emulation is backed by java.util.HashMap.
@NullUnmarked
public class SingletonImmutableMapWithUnhashableValueMapInterfaceTest
    extends RegularImmutableMapWithUnhashableValuesMapInterfaceTest {
  @Override