testRequest.encode(buffer, 0);
            });

            assertTrue(exception.getMessage().contains("Wrong size calculation"));
        }
    }

    // Test implementation classes
    private static class TestServerMessageBlock2Request extends ServerMessageBlock2Request<TestServerMessageBlock2Response> {
        private TestServerMessageBlock2Response testResponse;
        private int testSize = 64;

   * comparable</a>. If you pass objects that are not mutually comparable, this method may throw an
   * exception. (The reason for this decision is lost to time, but the reason <i>might</i> be that
   * we wanted to support legacy classes that implement the raw type {@code Comparable} (instead of
   * implementing {@code Comparable<Foo>}) without producing warnings. If so, we would prefer today

   *
   * <p>The method signature specifies {@code R extends Comparable} with a raw {@link Comparable},
   * instead of {@code R extends Comparable<? super R>}, and the same for {@code C}. That's
   * necessary to support classes defined without generics.
   */
  @SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
  public static <R extends Comparable, C extends Comparable, V> TreeBasedTable<R, C, V> create() {

        try {
            SearchEngineUtil.class.getDeclaredConstructor().newInstance();
            fail("Should not be able to instantiate utility class");
        } catch (Exception e) {
            // Expected - utility classes should have private constructors
            assertTrue(e instanceof IllegalAccessException || e.getCause() instanceof IllegalAccessException
                    || e instanceof InstantiationException);
        }
    }

        // Should get the last one
        ScriptEngine retrieved = scriptEngineFactory.getScriptEngine("engine");
        assertEquals(engine3, retrieved);
    }

    // Test implementation classes
    private static class TestScriptEngine implements ScriptEngine {
        private final String identifier;

        public TestScriptEngine() {
            this("default");
        }

 */
abstract class AbstractBaseGraph<N> implements BaseGraph<N> {

  /**
   * Returns the number of edges in this graph; used to calculate the size of {@link Graph#edges()}.
   * This implementation requires O(|N|) time. Classes extending this one may manually keep track of
   * the number of edges as the graph is updated, and override this method for better performance.
   */
  protected long edgeCount() {
    long degreeSum = 0L;

 * multimap's iterators would propagate through the keys and values in sorted order.
 *
 * <p>Keys and values may be null, as long as the underlying collection classes support null
 * elements.
 *
 * <p>The collections created by {@link #createCollection()} may or may not allow duplicates. If the
 * collection, such as a {@link Set}, does not support duplicates, an added key-value pair will

 * 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})

 *
 * @param <B> The concrete type of this builder (the 'self-type'). All the Builder methods of this
 *     class (such as {@link #named}) return this type, so that Builder methods of more derived
 *     classes can be chained onto them without casting.
 * @param <G> The type of the generator to be passed to testers in the generated test suite. An
 *     instance of G should somehow provide an instance of the class under test, plus any other

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentSkipListMap;
import org.jspecify.annotations.NullUnmarked;

/**
 * Helper classes for various benchmarks.
 *
 * @author Christopher Swenson
 */
@NullUnmarked
final class BenchmarkHelpers {
  /** So far, this is the best way to test various implementations of {@link Set} subclasses. */