import java.util.Optional;
import java.util.Set;
import org.jspecify.annotations.NullUnmarked;
import org.junit.After;
import org.junit.Test;

/**
 * Abstract base class for testing undirected {@link Network} implementations defined in this
 * package.
 */
@NullUnmarked
public abstract class AbstractStandardUndirectedNetworkTest extends AbstractNetworkTest {

import java.util.concurrent.Future;
import org.jspecify.annotations.NullUnmarked;
import org.junit.After;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests for {@link StandardMutableValueGraph} and related functionality. */
// TODO(user): Expand coverage and move to proper test suite.
@RunWith(JUnit4.class)
@NullUnmarked
public final class ValueGraphTest {

                Enumeration<InetAddress> addresses = ni.getInetAddresses();
                while (addresses.hasMoreElements()) {
                    InetAddress addr = addresses.nextElement();

                    // Estimate link speed (would need platform-specific code for actual speed)
                    int linkSpeed = ni.isVirtual() ? 100 : 1000; // Default 1Gbps

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@link ImmutableMultiset}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
public class ImmutableMultisetTest extends TestCase {

  @J2ktIncompatible

        return Files.isRegularFile(target) ? target.toFile() : null;
    }

    /**
     * We are interested in project success events, in which case we call
     * the {@link #installIntoProjectLocalRepository(MavenProject)} method.
     * The mojo started event is also captured to determine the lifecycle
     * phases the project has been through.
     *
     * @param event the execution event

import java.util.regex.MatchResult;
import java.util.regex.Pattern;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link ArbitraryInstances}.
 *
 * @author Ben Yu
 */
@NullUnmarked
public class ArbitraryInstancesTest extends TestCase {

  public void testGet_primitives() {

### Заголовок 3 { #header-3 }

Ещё ссылка: [**FastAPI** Генераторы Проектов](project-generation.md "Тайтл"){.internal-link target=_blank} с тайтлом.

# Заголовок 4 { #header-4 }

Ссылка на якорь: [Заголовок 2](#header-2)

# Заголовок с потерянной ссылкой { #header-with-link }

 * every element added, the garbage collector will have to traverse {@code 1.5} references on
 * average, in the marking phase, not {@code 5.0} as in {@code java.util.HashSet}.
 *
 * <p>If there are no removals, then {@link #iterator iteration} order is the same as insertion
 * order. Any removal invalidates any ordering guarantees.
 *
 * <p>This class should not be assumed to be universally superior to {@code java.util.HashSet}.

import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.Set;
import java.util.function.BiConsumer;
import java.util.function.BiFunction;
import org.jspecify.annotations.Nullable;

/**
 * A {@link BiMap} backed by two hash tables. This implementation allows null keys and values. A
 * {@code HashBiMap} and its inverse are both serializable.
 *
 * <p>This implementation guarantees insertion-based iteration order of its keys.

import java.nio.charset.Charset;
import java.nio.charset.UnsupportedCharsetException;
import java.util.Arrays;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for {@link MediaType}.
 *
 * @author Gregory Kick
 */
@GwtCompatible
@NullUnmarked
public class MediaTypeTest extends TestCase {
  @J2ktIncompatible
  @GwtIncompatible // reflection