fail("Expected NullPointerException");
        } catch (NullPointerException e) {
            // Expected when null listener is set
        }
    }

    // Test helper classes
    private static class TestScriptEngine implements ScriptEngine {
        private String lastScript;
        private Map<String, Object> lastParams;
        private final String prefix;

        public TestScriptEngine() {

[Snapshot API Diffs][guava-snapshot-api-diffs] are also available.

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[guava.dev/api](https://guava.dev/api). You can also jump right to a specific
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[guava.dev/ImmutableList](https://guava.dev/ImmutableList)!

## Learn about Guava

-   Our users' guide, [Guava Explained]

 * multiple threads.
 *
 * <p>Popular escapers are defined as constants in classes like {@link
 * com.google.common.html.HtmlEscapers} and {@link com.google.common.xml.XmlEscapers}. To create
 * your own escapers extend this class and implement the {@link #escape(char)} method.
 *
 * @author Sven Mawson
 * @since 15.0
 */
@GwtCompatible

 * like {@link List} that allow duplicates, the collection will keep the existing key-value pairs
 * while adding a new pair.
 *
 * <p>This class is not threadsafe when any concurrent operations update the multimap, even if the
 * underlying map and {@link #createCollection()} method return threadsafe classes. Concurrent read
 * operations will work correctly. To allow concurrent update operations, wrap your multimap with a

            public int getType() {
                return type;
            }

            @Override
            public <T> T unwrap(Class<T> type) {
                return null;
            }
        };
    }

    // Mock classes

    static class MockFessConfig extends FessConfig.SimpleImpl {
        @Override
        public String getSmbAvailableSidTypes() {
            return "1,2,4:2,5:1";

 *
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 7.0
 */
@GwtCompatible
public class TreeBasedTable<R, C, V> extends StandardRowSortedTable<R, C, V> {
  private final Comparator<? super C> columnComparator;

  private static final class Factory<C, V> implements Supplier<Map<C, V>>, Serializable {
    final Comparator<? super C> comparator;

import sun.misc.Unsafe;

/**
 * A package-local class holding common representation and mechanics for classes supporting dynamic
 * striping on 64bit values. The class extends Number so that concrete subclasses must publicly do
 * so.
 */
@SuppressWarnings("SunApi") // b/345822163
@GwtIncompatible
abstract class Striped64 extends Number {
  /*
   * This class maintains a lazily-initialized table of atomically

 * and {@link State#TERMINATED} states are terminal states, once a service enters either of these
 * states it cannot ever leave them.
 *
 * <p>Implementors of this interface are strongly encouraged to extend one of the abstract classes
 * in this package which implement this interface and make the threading and state management
 * easier.
 *
 * @author Jesse Wilson
 * @author Luke Sandberg
 * @since 9.0 (in 1.0 as {@code com.google.common.base.Service})

     */
    static final VarHandle HANDLE = byteArrayViewVarHandle(long[].class, LITTLE_ENDIAN);
  }

  /**
   * The only reference to Unsafe is in this nested class. We set things up so that if
   * Unsafe.theUnsafe is inaccessible, the attempt to load the nested class fails, and the outer
   * class's static initializer can fall back on a non-Unsafe version.
   */
  @SuppressWarnings("SunApi") // b/345822163

        assertNotNull(filter);
    }

    // Test OPTIONS constant
    public void test_optionsConstant() {
        assertEquals("OPTIONS", CorsFilter.OPTIONS);
    }

    // Helper classes for testing

    private static class TestCorsHandlerFactory extends CorsHandlerFactory {
        private boolean getCalled = false;
        private String lastOrigin = null;
        private CorsHandler handler = null;