* than one, not just two.
   */
  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  @IgnoreJRERequirement // see enclosing class (whose annotation Animal Sniffer ignores here...)
  private static final class ToOptionalState<T extends @Nullable Object> {
    static final int MAX_EXTRAS = 4;

    @Nullable T element;
    List<T> extras;

import javax.crypto.spec.SecretKeySpec;
import javax.security.auth.kerberos.KerberosKey;
import javax.security.auth.kerberos.KerberosPrincipal;

import org.junit.jupiter.api.Test;

/**
 * Tests for the PacMac class.
 */
class PacMacTest {

    private static final byte[] TEST_DATA = "test data".getBytes();
    private static final KerberosPrincipal TEST_PRINCIPAL = new KerberosPrincipal("test@REALM");

    /**
     * Test method for

        final TimeUnit timeUnit = TimeUnit.valueOf(getInitParameter(TIME_TO_LIVE_TIME_UNIT_PROPERTY, "MINUTES", String.class));
        final int maxTotal = getInitParameter(MAX_TOTAL_CONNECTION_PROPERTY, 200, Integer.class);
        final int defaultMaxPerRoute = getInitParameter(DEFAULT_MAX_CONNECTION_PER_ROUTE_PROPERTY, 20, Integer.class);

 * @since 11.0
 */
public final class Hashing {
  /**
   * Returns a general-purpose, <b>temporary-use</b>, non-cryptographic hash function. The algorithm
   * the returned function implements is unspecified and subject to change without notice.
   *
   * <p><b>Warning:</b> a new random seed for these functions is chosen each time the {@code

    assertThrows(IllegalStateException.class, () -> MinMaxPriorityQueue.isEvenLevel((1 << 31) - 1));
    assertThrows(
        IllegalStateException.class, () -> MinMaxPriorityQueue.isEvenLevel(Integer.MAX_VALUE));
    assertThrows(IllegalStateException.class, () -> MinMaxPriorityQueue.isEvenLevel(1 << 31));
    assertThrows(
        IllegalStateException.class, () -> MinMaxPriorityQueue.isEvenLevel(Integer.MIN_VALUE));
  }

            result[0] = key.toString();
            result[1] = value.toString();

            return result;
        }
    } // class PropertiesReader

    /**
     * This class is used to write properties lines.
     */
    public static class PropertiesWriter extends FilterWriter {
        private boolean typed;

        /**
         * Constructor.
         *

            result[0] = key.toString();
            result[1] = value.toString();

            return result;
        }
    } // class PropertiesReader

    /**
     * This class is used to write properties lines.
     */
    public static class PropertiesWriter extends FilterWriter {
        private boolean typed;

        /**
         * Constructor.
         *

import java.io.Serializable;
import java.util.List;

import org.codelibs.fess.util.ComponentUtil;

/**
 * Pager class for file crawler configuration management.
 * This class provides pagination functionality for file configuration listings
 * and contains form fields for file crawler configuration parameters.
 */
public class FileConfigPager implements Serializable {

    /** Serial version UID for serialization */

    private static final class Snippet {
        final int line;       // line of the [.multi-language-sample] header
        final Language lang;  // best-effort deduction (UNKNOWN allowed)

        Snippet(int line, Language lang) {
            this.line = line;
            this.lang = lang;
        }
    }

    private static final class Error {
        final int line;

 * @author Gregory Kick
 */
@GwtCompatible
abstract class RegularImmutableTable<R, C, V> extends ImmutableTable<R, C, V> {
  RegularImmutableTable() {}

  abstract Cell<R, C, V> getCell(int iterationIndex);

  @Override
  final ImmutableSet<Cell<R, C, V>> createCellSet() {
    return isEmpty() ? ImmutableSet.of() : new CellSet();
  }

  @WeakOuter
  private final class CellSet extends IndexedImmutableSet<Cell<R, C, V>> {