new ClassValue<Boolean>() {
            @Override
            protected Boolean computeValue(Class<?> type) {
              checkExceptionClassValidity(type.asSubclass(Exception.class));
              return true;
            }
          };

      @Override
      public void validateClass(Class<? extends Exception> exceptionClass) {

    for (ClassInfo info :
        ClassPath.from(GwtTestSuite.class.getClassLoader()).getTopLevelClasses()) {
      if (info.getName().endsWith("_gwt")) {
        Class<?> clazz = info.load();
        // TODO(cpovirk): why does asSubclass() throw? Is it something about ClassLoaders?
        @SuppressWarnings("unchecked")
        Class<? extends GWTTestCase> cast = (Class<? extends GWTTestCase>) clazz;
        suite.addTestSuite(cast);
      }
    }

    Preconditions.checkArgument(hitRate >= 0 && hitRate <= 1, "hitRate must be in the range [0,1]");

    enumType =
        Class.forName(EnumsBenchmark.class.getCanonicalName() + "$" + enumSize + "Enum")
            .asSubclass(Enum.class);

    Enum<?>[] allConstants = enumType.getEnumConstants();
    List<String> hits = new ArrayList<>();
    for (int i = 0; i < hitRate * 256 / 3; ++i) {
      hits.add(allConstants[0].name());

import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.AnnotatedAndAbstractInSuperclassTest.SubClass;
import java.util.ArrayList;
import java.util.List;

public class AnnotatedAndAbstractInSuperclassTest extends AbstractEventBusTest<SubClass> {
  abstract static class SuperClass {
    @Subscribe
    public abstract void overriddenAndAnnotatedInSubclass(Object o);

    @Subscribe

import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.AnnotatedAndAbstractInSuperclassTest.SubClass;
import java.util.ArrayList;
import java.util.List;

public class AnnotatedAndAbstractInSuperclassTest extends AbstractEventBusTest<SubClass> {
  abstract static class SuperClass {
    @Subscribe
    public abstract void overriddenAndAnnotatedInSubclass(Object o);

    @Subscribe

import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.NeitherAbstractNorAnnotatedInSuperclassTest.SubClass;
import java.util.ArrayList;
import java.util.List;

public class NeitherAbstractNorAnnotatedInSuperclassTest extends AbstractEventBusTest<SubClass> {
  static class SuperClass {
    final List<Object> neitherOverriddenNorAnnotatedEvents = new ArrayList<>();

        // The raw class isn't even a subclass.
      }
    }
    if (!spec.suppressGetSupertype()) {
      try {
        assertThat(getSupertype(paramType, TypeToken.of(returnType).getRawType()))
            .isNotEqualTo(returnType);
      } catch (IllegalArgumentException notSubtype2) {
        // The raw class isn't even a subclass.
      }
    }
    return null;
  }

import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.AnnotatedNotAbstractInSuperclassTest.SubClass;
import java.util.ArrayList;
import java.util.List;

public class AnnotatedNotAbstractInSuperclassTest extends AbstractEventBusTest<SubClass> {
  static class SuperClass {
    final List<Object> notOverriddenInSubclassEvents = new ArrayList<>();

import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.AbstractNotAnnotatedInSuperclassTest.SubClass;
import java.util.ArrayList;
import java.util.List;

public class AbstractNotAnnotatedInSuperclassTest extends AbstractEventBusTest<SubClass> {
  abstract static class SuperClass {
    public abstract void overriddenInSubclassNowhereAnnotated(Object o);

import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.NeitherAbstractNorAnnotatedInSuperclassTest.SubClass;
import java.util.ArrayList;
import java.util.List;

public class NeitherAbstractNorAnnotatedInSuperclassTest extends AbstractEventBusTest<SubClass> {
  static class SuperClass {
    final List<Object> neitherOverriddenNorAnnotatedEvents = new ArrayList<>();