if (servers == null) {
            servers = new ArrayList<>();
        }

        return servers;
    }

    public ArtifactResolutionRequest setMirrors(List<Mirror> mirrors) {
        this.mirrors = mirrors;

        return this;
    }

    public List<Mirror> getMirrors() {
        if (mirrors == null) {
            mirrors = new ArrayList<>();
        }

        return mirrors;

    }

    public void addArtifact(Artifact artifact) {
        if (artifacts == null) {
            artifacts = new LinkedHashSet<>();
        }

        artifacts.add(artifact);
    }

    public Set<Artifact> getArtifacts() {
        if (artifacts == null) {
            artifacts = new LinkedHashSet<>();
        }

        return artifacts;
    }

    public void setArtifacts(Set<Artifact> artifacts) {

  public void testExecute() {
    MockExecutor mock = new MockExecutor();
    TestExecutor testExecutor = new TestExecutor(mock);
    testExecutor.execute(doNothing());
    mock.assertLastMethodCalled("execute");
  }

  public void testSubmit() throws InterruptedException, ExecutionException {
    {
      MockExecutor mock = new MockExecutor();
      TestExecutor testExecutor = new TestExecutor(mock);

                throw new InvalidVersionSpecificationException(
                        "Only fully-qualified sets allowed in multiple set scenario: " + spec);
            } else {
                version = new DefaultArtifactVersion(process);
                restrictions.add(Restriction.EVERYTHING);
            }
        }

        cached = new VersionRange(version, restrictions);

    ImmutableList.Builder<Range<K>> rangesBuilder = new ImmutableList.Builder<>(map.size());
    ImmutableList.Builder<V> valuesBuilder = new ImmutableList.Builder<>(map.size());
    for (Entry<Range<K>, ? extends V> entry : map.entrySet()) {
      rangesBuilder.add(entry.getKey());
      valuesBuilder.add(entry.getValue());
    }
    return new ImmutableRangeMap<>(rangesBuilder.build(), valuesBuilder.build());
  }

            dos.writeObject(new DERSequence(mechs));
            dos.close();
            return bos.toByteArray();
        }
        catch ( IOException e ) {
            throw new CIFSException("Failed to encode mechList", e);
        }
    }


    private SpnegoToken initialToken () throws CIFSException {
        byte[] mechToken = this.mechContext.initSecContext(new byte[0], 0, 0);

    throw new UnsupportedOperationException();
  }

  public final E set(int index, E element) {
    throw new UnsupportedOperationException();
  }

  public final void add(int index, E element) {
    throw new UnsupportedOperationException();
  }

  public final E remove(int index) {
    throw new UnsupportedOperationException();
  }

  @Override

        Thread[] threads = new Thread[threadNum];
        ESSourceReader reader = new ESSourceReader(client, settings, indexName);
        reader.setScrollSize(100);
        for (int i = 0; i < threadNum; i++) {
            threads[i] = new Thread(() -> {
                Map<String, Object> source;
                while ((source = reader.read()) != null) {

                    if (subValues.length == 3) {
                        return new Tuple4<>(values[0], subValues[0], subValues[1], subValues[2]);
                    }
                    if (subValues.length == 2) {
                        return new Tuple4<>(values[0], subValues[0], subValues[1], StringUtil.EMPTY);
                    }
                    return new Tuple4<>(values[0], values[1], Constants.MAPPING_TYPE_ARRAY, StringUtil.EMPTY);

    public static final String ERRORS_crud_invalid_mode = "{errors.crud_invalid_mode}";

    /** The key of the message: Failed to create a new data. */
    public static final String ERRORS_crud_failed_to_create_instance = "{errors.crud_failed_to_create_instance}";

    /** The key of the message: Failed to create a new data. ({0}) */
    public static final String ERRORS_crud_failed_to_create_crud_table = "{errors.crud_failed_to_create_crud_table}";