package com.google.common.collect;

import com.google.common.annotations.GwtCompatible;
import java.util.Collection;
import java.util.Map;

/**
 * A dummy superclass to support GWT serialization of the element types of a {@link HashMultimap}.
 * The GWT supersource for this class contains a field for each type.
 *
 * <p>For details about this hack, see {@code GwtSerializationDependencies}, which takes the same

import javax.annotation.CheckForNull;

/**
 * Weak reference with a {@code finalizeReferent()} method which a background thread invokes after
 * the garbage collector reclaims the referent. This is a simpler alternative to using a {@link
 * ReferenceQueue}.
 *
 * @author Bob Lee
 * @since 2.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public abstract class FinalizableWeakReference<T> extends WeakReference<T>

 */
package org.apache.maven.model.path;

/**
 * Normalizes a URL to remove the ugly parent references "../" that got potentially inserted by URL adjustment during
 * model inheritance.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface UrlNormalizer {

    /**
     * Normalizes the specified URL.
     *

 * under the License.
 */
package org.apache.maven.toolchain.merge;

import org.apache.maven.toolchain.model.PersistedToolchains;

/**
 *
 * @since 3.2.4
 * @deprecated since 4.0.0, use {@link org.apache.maven.toolchain.v4.MavenToolchainsMerger} instead
 */
@Deprecated(since = "4.0.0")
public class MavenToolchainMerger {

    validations:
      required: false
  - type: input
    id: page
    attributes:
      label: Page with the problem
      description: Please, provide a link to the relevant documentation page
    validations:

import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A mutable class-to-instance map backed by an arbitrary user-provided map. See also {@link
 * ImmutableClassToInstanceMap}.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#classtoinstancemap">{@code
 * ClassToInstanceMap}</a>.
 *

在这里，你将看到关于**多个主题**的不同诀窍或“如何操作”指南。

这些方法多数是**相互独立**的，在大多数情况下，你只需在这些内容适用于**你的项目**时才需要学习它们。

如果某些内容看起来对你的项目有用，请继续查阅，否则请直接跳过它们。

/// tip | 小技巧

如果你想以系统的方式**学习 FastAPI**（推荐），请阅读 [教程 - 用户指南](../tutorial/index.md){.internal-link target=_blank} 的每一章节。

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.util.concurrent;

import junit.framework.TestCase;

/** Unit tests for {@link ForwardingListeningExecutorService} */
public class ForwardingListeningExecutorServiceTest extends TestCase {
  public void testForwarding() {
    ForwardingObjectTester.testForwardingObject(ForwardingListeningExecutorService.class);

	}
}

func TestFileInfoHeaderSymlink(t *testing.T) {
	testenv.MustHaveSymlink(t)

	tmpdir := t.TempDir()

	link := filepath.Join(tmpdir, "link")
	target := tmpdir
	if err := os.Symlink(target, link); err != nil {
		t.Fatal(err)
	}
	fi, err := os.Lstat(link)
	if err != nil {
		t.Fatal(err)
	}

	h, err := FileInfoHeader(fi, target)
	if err != nil {
		t.Fatal(err)
	}

import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests remove operations on a set. Can't be invoked directly; please
 * see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author George van den Driessche
 */
@GwtCompatible
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.