} else {
      throw new IllegalArgumentException("unable to extract method from test: not a TestCase.");
    }
  }

  protected TestSuite makeSuiteForTesterClass(Class<? extends AbstractTester<?>> testerClass) {
    TestSuite candidateTests = new TestSuite(testerClass);
    TestSuite suite = filterSuite(candidateTests);

    Enumeration<?> allTests = suite.tests();
    while (allTests.hasMoreElements()) {

    } else {
      throw new IllegalArgumentException("unable to extract method from test: not a TestCase.");
    }
  }

  protected TestSuite makeSuiteForTesterClass(Class<? extends AbstractTester<?>> testerClass) {
    TestSuite candidateTests = new TestSuite(testerClass);
    TestSuite suite = filterSuite(candidateTests);

    Enumeration<?> allTests = suite.tests();
    while (allTests.hasMoreElements()) {

import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link ImmutableClassToInstanceMap}.
 *
 * @author Kevin Bourrillion
 */
@NullUnmarked
public class ImmutableClassToInstanceMapTest extends TestCase {
  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();

import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test of {@link MutableClassToInstanceMap}.
 *
 * @author Kevin Bourrillion
 */
@NullUnmarked
public class MutableClassToInstanceMapTest extends TestCase {
  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();

          "testEqualsAndSerialization",
          "testEquality");

  private static final Chopper TEST_SUFFIX =
      suffix("Test").or(suffix("Tests")).or(suffix("TestCase")).or(suffix("TestSuite"));

  private final Logger logger = Logger.getLogger(getClass().getName());
  private final ClassSanityTester tester = new ClassSanityTester();
  private Visibility visibility = Visibility.PACKAGE;

          "testEqualsAndSerialization",
          "testEquality");

  private static final Chopper TEST_SUFFIX =
      suffix("Test").or(suffix("Tests")).or(suffix("TestCase")).or(suffix("TestSuite"));

  private final Logger logger = Logger.getLogger(getClass().getName());
  private final ClassSanityTester tester = new ClassSanityTester();
  private Visibility visibility = Visibility.PACKAGE;