assertThat(headers["c"]).isEqualTo("d")
    assertThat(headers["e"]).isNull()
  }

  @Test fun iteratorOperator() {
    val headers = headersOf("a", "b", "c", "d")

    val pairs = mutableListOf<Pair<String, String>>()
    for ((name, value) in headers) {
      pairs += name to value
    }

    assertThat(pairs).containsExactly("a" to "b", "c" to "d")
  }

  @Test fun builderGetOperator() {

     */
    public CIFSUnsupportedCryptoException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a CIFS unsupported crypto exception with the specified detail message.
     *
     * @param message the detail message
     */
    public CIFSUnsupportedCryptoException(final String message) {
        super(message);
    }

    /**

     */
    public SMBProtocolDowngradeException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Creates a new SMBProtocolDowngradeException with the specified detail message.
     *
     * @param message the detail message
     */
    public SMBProtocolDowngradeException(final String message) {
        super(message);
    }

    /**

    public TransportException() {
    }

    /**
     * Constructs a new TransportException with the specified detail message.
     * @param msg the detail message
     */
    public TransportException(final String msg) {
        super(msg);
    }

    /**
     * Constructs a new TransportException with the specified cause.
     * @param rootCause the cause of this exception
     */

     *
     * @param id an id
     * @return corresponding authentication info
     */
    AuthenticationInfo getAuthenticationInfo(String id);

    ProxyInfo getProxy(String protocol);

    void getArtifact(Artifact artifact, ArtifactRepository repository)
            throws TransferFailedException, ResourceDoesNotExistException;

 * @since 4.0.0
 */
public interface ExtensibleEnumRegistry<T extends ExtensibleEnum> extends Service {
    @Nonnull
    Optional<T> lookup(@Nonnull String id);

    @Nonnull
    default T require(@Nonnull String id) {
        return lookup(id).orElseThrow(() -> new IllegalArgumentException("Unknown extensible enum value '" + id + "'"));
    }

     * @param cause The cause.
     */
    public LdapOperationException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new LDAP operation exception with the specified detail message.
     *
     * @param message The detail message.
     */
    public LdapOperationException(final String message) {
        super(message);
    }

public class MinimalSetTest extends TestCase {
  public static Test suite() {
    return SetTestSuiteBuilder.using(
            new TestStringSetGenerator() {
              @Override
              protected Set<String> create(String[] elements) {
                return MinimalSet.of(elements);
              }
            })
        .named("MinimalSet")
        .withFeatures(

 */
@GwtCompatible
abstract class CommonMatcher {
  public abstract boolean matches();

  public abstract boolean find();

  public abstract boolean find(int index);

  public abstract String replaceAll(String replacement);

  public abstract int end();

  public abstract int start();

        String expectedToString = "Mock DfsReferralData";

        // Define the behavior of the mock's toString() method
        when(mockData.toString()).thenReturn(expectedToString);

        // Create a DfsReferral instance with the mock data
        DfsReferral dfsReferral = new DfsReferral(mockData);

        // Verify that toString() returns the expected string from the mock data object