/**
 * This class generates {@link BeanDesc}.
 * <p>
 * It returns a {@link BeanDesc} that handles the metadata of the specified JavaBeans.
 * </p>
 *
 * <pre>
 * BeanDesc beanDesc = BeanDescFactory.getBeanDesc(Foo.class);
 * </pre>
 * <p>
 * {@link BeanDesc} is cached. To clear the cache, call {@link DisposableUtil#dispose()}.
 * </p>
 *
 * @author higa
 * @see BeanDesc
 * @see DisposableUtil
 */

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testIsNull_serialization() {
    Predicate<String> pre = Predicates.isNull();
    Predicate<String> post = SerializableTester.reserializeAndAssert(pre);
    assertEquals(pre.apply("foo"), post.apply("foo"));
    assertEquals(pre.apply(null), post.apply(null));
  }

  public void testNotNull_apply() {

 * <p>
 * Usage example:
 * </p>
 *
 * <pre>
 * import static org.codelibs.core.lang.ClassLoaderIterator.*;
 *
 * ClassLoader classLoader = ...;
 * for (ClassLoader loader : iterable(classLoader)) {
 *     ...
 * }
 * </pre>
 *
 * @author koichik
 */
public class ClassLoaderIterator implements Iterator<ClassLoader> {

    /** クラスローダ */

  /**
   * How many concurrent calls should be possible to make at any time.
   * The pool will routinely try to pre-emptively open connections to satisfy this minimum.
   * Connections will still be closed if they idle beyond the keep-alive but will be replaced.
   */
  @JvmField val minimumConcurrentCalls: Int = 0,
  /** How long to wait to retry pre-emptive connection attempts that fail. */
  @JvmField val backoffDelayMillis: Long = 60 * 1000,

     * </p>
     * <pre>
     * InputStream is = ...;
     * try {
     *   is.read(...);
     * } finally {
     *   close(is);
     * }
     * </pre>
     * <p>

 * It applies each normalizer in the order they were added to the chain.
 *
 * <p>Usage example:</p>
 * <pre>
 * NormalizerChain chain = new NormalizerChain();
 * chain.add(new SomeNormalizer());
 * chain.add(new AnotherNormalizer());
 * String normalizedText = chain.normalize("input text", "field", "en");
 * </pre>
 *
 * <p>Methods:</p>
 * <ul>

 *
 * <pre>
 * public class PackageSanityTests extends AbstractPackageSanityTests {}
 * </pre>
 *
 * <p>Note that only top-level classes with either a non-private constructor or a non-private static
 * factory method to construct instances can have their instance methods checked. For example:
 *
 * <pre>
 * public class Address {
 *   private final String city;

import org.hamcrest.Matcher;

/**
 * @author koichik
 */
public abstract class TestUtil {

    /**
     * 実際の値が期待する{@literal clazz}と等しいかを検証する{@link Matcher}を返します。
     *
     * <pre>assertThat(clazz, is(Xxx.class));</pre>
     * <p>
     * と書くと{@link CoreMatchers#is(Class)}が適用されて{@literal clazz}が {@literal Xxx}
     * のインスタンスかを検証されてしまうのでこれが必要。
     *
     * @param clazz
     *            期待するクラス

   * application successfully.
   *
   * <p>Example usage:
   *
   * <pre>
   * public static void main(String[] args) {
   *   Thread.currentThread().setUncaughtExceptionHandler(UncaughtExceptionHandlers.systemExit());
   *   ...
   * </pre>
   *
   * <p>The returned handler logs any exception at severity {@code SEVERE} and then shuts down the

import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests may use this to intercept messages that are logged by the code under test. Example:
 *
 * <pre>
 *   TestLogHandler handler;
 *
 *   protected void setUp() throws Exception {
 *     super.setUp();
 *     handler = new TestLogHandler();
 *     SomeClass.logger.addHandler(handler);