// Test class with single role
    @Secured({ "ROLE_USER" })
    static class SingleRoleClass {
        public void testMethod() {
        }
    }

    // Test class with multiple roles
    @Secured({ "ROLE_USER", "ROLE_ADMIN" })
    static class MultipleRolesClass {
        public void testMethod() {
        }
    }

    // Test class with method annotations
    static class MethodAnnotatedClass {

    @CustomSize(payload = { TestPayload.class })
    private String testFieldWithPayload;

    // Test method with CustomSize annotation
    @CustomSize(minKey = "method.min", maxKey = "method.max")
    public String testMethod() {
        return "test";
    }

    // Test groups for validation
    private interface TestGroup {
    }

    // Test payload for validation
    private static class TestPayload implements Payload {

    private String testFieldWithMultiplePayloads;

    // Test method with UriType annotation
    @UriType(protocolType = ProtocolType.WEB)
    public String testMethod() {
        return "http://example.com";
    }

    // Test parameter with UriType annotation
    public void testMethodWithParameter(@UriType(protocolType = ProtocolType.FILE) final String uri) {

    }
    assertTrue("Should report error when no exception is thrown", foundProblem);
  }

  /**
   * Class for testing all permutations of nullable/non-nullable two-argument methods using
   * testMethod().
   *
   * <ul>
   *   <li>normalNormal: two params, neither is Nullable
   *   <li>nullableNormal: only first param is Nullable
   *   <li>normalNullable: only second param is Nullable

@NullUnmarked
public class CharSinkTester extends SourceSinkTester<CharSink, String, CharSinkFactory> {

  private static final ImmutableList<Method> testMethods = getTestMethods(CharSinkTester.class);

  static TestSuite tests(String name, CharSinkFactory factory) {
    TestSuite suite = new TestSuite(name);
    for (Entry<String, String> entry : TEST_STRINGS.entrySet()) {

@NullUnmarked
public class CharSinkTester extends SourceSinkTester<CharSink, String, CharSinkFactory> {

  private static final ImmutableList<Method> testMethods = getTestMethods(CharSinkTester.class);

  static TestSuite tests(String name, CharSinkFactory factory) {
    TestSuite suite = new TestSuite(name);
    for (Entry<String, String> entry : TEST_STRINGS.entrySet()) {

@NullUnmarked
public class CharSourceTester extends SourceSinkTester<CharSource, String, CharSourceFactory> {

  private static final ImmutableList<Method> testMethods = getTestMethods(CharSourceTester.class);

  static TestSuite tests(String name, CharSourceFactory factory, boolean testAsByteSource) {
    TestSuite suite = new TestSuite(name);

@NullUnmarked
public class ByteSourceTester extends SourceSinkTester<ByteSource, byte[], ByteSourceFactory> {

  private static final ImmutableList<Method> testMethods = getTestMethods(ByteSourceTester.class);

  static TestSuite tests(String name, ByteSourceFactory factory, boolean testAsCharSource) {
    TestSuite suite = new TestSuite(name);

@NullUnmarked
public class ByteSourceTester extends SourceSinkTester<ByteSource, byte[], ByteSourceFactory> {

  private static final ImmutableList<Method> testMethods = getTestMethods(ByteSourceTester.class);

  static TestSuite tests(String name, ByteSourceFactory factory, boolean testAsCharSource) {
    TestSuite suite = new TestSuite(name);