import org.jspecify.annotations.Nullable;

/**
 * Wrapper around either a {@link Method} or a {@link Constructor}. Convenience API is provided to
 * make common reflective operation easier to deal with, such as {@link #isPublic}, {@link
 * #getParameters} etc.
 *
 * <p>In addition to convenience methods, {@link TypeToken#method} and {@link TypeToken#constructor}

   * though note that it is not serializable unless you explicitly make it {@link Serializable},
   * typically by writing {@code (Function<Object, String> & Serializable) Object::toString}.
   *
   * <p>For more important information about the transition from Guava's {@link Function} class to
   * the JDK {@link java.util.function.Function} class, see {@link Function}.
   */
  public static Function<Object, String> toStringFunction() {

/**
 * Utility class for conversions related to {@link BigInteger}.
 *
 * @author higa
 */
public abstract class BigIntegerConversionUtil {

    /**
     * Do not instantiate.
     */
    protected BigIntegerConversionUtil() {
    }

    /**
     * Converts to {@link BigInteger}.
     *
     * @param o
     *            The object to convert
     * @return The converted {@link BigInteger}
     */

import java.util.stream.Collector;
import org.jspecify.annotations.Nullable;

/**
 * A {@link SortedMultiset} whose contents will never change, with many other important properties
 * detailed at {@link ImmutableCollection}.
 *
 * <p><b>Warning:</b> as with any sorted collection, you are strongly advised not to use a {@link
 * Comparator} or {@link Comparable} type whose comparison behavior is <i>inconsistent with

import java.util.logging.Logger;
import org.jspecify.annotations.Nullable;

/**
 * A reference queue with an associated background thread that dequeues references and invokes
 * {@link FinalizableReference#finalizeReferent()} on them. Java 9+ users should prefer {@link
 * java.lang.ref.Cleaner Cleaner}; see example <a href="#cleaner">below</a>.
 *
 * <p>Keep a strong reference to this object until all of the associated referents have been

import org.codelibs.core.exception.ConverterRuntimeException;

/**
 * Options to specify when copying JavaBeans or {@link Map} using {@link BeanUtil}.
 *
 * @author higa
 */
public class CopyOptions {

    /**
     * Creates a new {@link CopyOptions} instance.
     */
    public CopyOptions() {
    }

    /**
     * Default converter for dates.
     */

    /**
     * Builds the effective toolchains for the specified toolchains sources.
     *
     * @param session the {@link Session}, must not be {@code null}
     * @param installationToolchainsFile The {@link Source} pointing to the installation toolchains, must not be {@code null}
     * @param userToolchainsSource The {@link Source} pointing to the user toolchains, must not be {@code null}

import org.jspecify.annotations.Nullable;

/**
 * This class provides a skeletal implementation of the {@link SortedMultiset} interface.
 *
 * <p>The {@link #count} and {@link #size} implementations all iterate across the set returned by
 * {@link Multiset#entrySet()}, as do many methods acting on the set returned by {@link
 * #elementSet()}. Override those methods for better performance.
 *
 * @author Louis Wasserman
 */

    /**
     * Test method for
     * {@link org.codelibs.core.collection.EmptyIterator#EmptyIterator()}.
     */
    @Test
    public void testEmptyIterator() {
        final EmptyIterator<String> emptyIterator = new EmptyIterator<String>();
        assertThat(emptyIterator, is(notNullValue()));
    }

    /**
     * Test method for {@link org.codelibs.core.collection.EmptyIterator#remove()}
     * .
     */

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

/**
 * Most of the logic for {@link IteratorTester} and {@link ListIteratorTester}.
 *
 * @param <E> the type of element returned by the iterator
 * @param <I> the type of the iterator ({@link Iterator} or {@link ListIterator})
 * @author Kevin Bourrillion
 * @author Chris Povirk
 */
@GwtCompatible
@NullMarked