queryFieldConfig.setSearchFields(fields);

        // Test field at the end (worst case for array lookup, but same for Set)
        String testField = "field999";

        // Warm up
        for (int i = 0; i < 100; i++) {
            queryCommand.isSearchField(testField);
        }

        // Measure Set-based lookup
        long startTime = System.nanoTime();
        for (int i = 0; i < 10000; i++) {

                invokerRequest, (EncryptOptions) invokerRequest.options().orElse(null));
    }

    @Override
    protected void lookup(EncryptContext context) throws Exception {
        if (context.goals == null) {
            super.lookup(context);
            context.goals = context.lookup.lookupMap(Goal.class);
        }
    }

    @Override
    protected int execute(EncryptContext context) throws Exception {
        try {

                invokerRequest, (UpgradeOptions) invokerRequest.options().orElse(null));
    }

    @Override
    protected void lookup(UpgradeContext context) throws Exception {
        if (context.goals == null) {
            super.lookup(context);
            context.goals = context.lookup.lookupMap(Goal.class);
        }
    }

    @Override
    protected int execute(UpgradeContext context) throws Exception {
        try {

 * @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 + "'"));
    }

		return User{
			ID:      userid,
			Enabled: false,
		}, nil
	case http.StatusUnauthorized:
		return User{}, ErrAccessTokenExpired
	}
	return User{}, fmt.Errorf("Unable to lookup - keycloak user lookup returned %v", resp.Status)
}

// Option is a function type that accepts a pointer Target
type Option func(*KeycloakProvider)

// WithTransport provide custom transport

    hostAddresses.remove(hostname)
    return this
  }

  @Throws(UnknownHostException::class)
  fun lookup(
    hostname: String,
    index: Int,
  ): InetAddress = hostAddresses[hostname]!![index]

  @Throws(UnknownHostException::class)
  override fun lookup(hostname: String): List<InetAddress> {
    requestedHosts.add(hostname)
    return hostAddresses[hostname] ?: throw UnknownHostException()
  }

                this.session,
                null,
                this.getClass().getName(),
                getContainer().lookup(ArtifactResolver.class),
                getContainer().lookup(VersionRangeResolver.class),
                getContainer().lookup(RemoteRepositoryManager.class),
                Arrays.asList(newTestRepository()));
    }

    @Mock
    private Lookup lookup;

    @BeforeEach
    void onSetup() throws Exception {
        MockitoAnnotations.initMocks(this);

        Map<String, ToolchainFactory> factories = new HashMap<>();
        factories.put("basic", toolchainFactoryBasicType);
        factories.put("rare", toolchainFactoryRareType);

        when(lookup.lookupMap(ToolchainFactory.class)).thenReturn(factories);

    @BeforeEach
    public void setUp() throws Exception {
        super.setUp();

        ArtifactResolver resolver = getContainer().lookup(ArtifactResolver.class, "classpath");
        DefaultArtifactDescriptorReader pomReader =
                (DefaultArtifactDescriptorReader) getContainer().lookup(ArtifactDescriptorReader.class);
        Field field = DefaultArtifactDescriptorReader.class.getDeclaredField("artifactResolver");

    this.replacementArray = replacementArray;
  }

  // Returns the non-null array of replacements for fast lookup.
  char[][] getReplacementArray() {
    return replacementArray;
  }

  // Creates a replacement array from the given map. The returned array is a
  // linear lookup table of replacement character sequences indexed by the
  // original character value.
  @VisibleForTesting