true), RESOURCE_LOCKED("Resource is locked", ErrorCategory.RESOURCE, true),

        // Transient errors
        BUSY("Server busy", ErrorCategory.TRANSIENT, true), TRY_AGAIN("Try again later", ErrorCategory.TRANSIENT,
                true), SERVICE_UNAVAILABLE("Service temporarily unavailable", ErrorCategory.TRANSIENT, true),

        // Generic errors

 */
@GwtCompatible
@SuppressWarnings("serial") // uses writeReplace(), not default serialization
final class SingletonImmutableBiMap<K, V> extends ImmutableBiMap<K, V> {

  final transient K singleKey;
  final transient V singleValue;

  SingletonImmutableBiMap(K singleKey, V singleValue) {
    checkEntryNotNull(singleKey, singleValue);
    this.singleKey = singleKey;
    this.singleValue = singleValue;

  transient @Nullable K[] keys;

  /** Maps an "entry" to the value of that entry. */
  transient @Nullable V[] values;

  transient int size;
  transient int modCount;

  /** Maps a bucket to the "entry" of its first element. */
  private transient int[] hashTableKToV;

  /** Maps a bucket to the "entry" of its first element. */
  private transient int[] hashTableVToK;

    }
  }

  abstract Iterator<Entry<K, V>> entryIterator();

  @LazyInit private transient @Nullable Set<K> keySet;

  @Override
  public Set<K> keySet() {
    Set<K> result = keySet;
    return (result == null) ? keySet = createKeySet() : result;
  }

  abstract Set<K> createKeySet();

  @LazyInit private transient @Nullable Multiset<K> keys;

  @Override
  public Multiset<K> keys() {

    EnumMultiset<E> result = create(type);
    Iterables.addAll(result, elements);
    return result;
  }

  private transient Class<E> type;
  private transient E[] enumConstants;
  private transient int[] counts;
  private transient int distinctElements;
  private transient long size;

  /** Creates an empty {@code EnumMultiset}. */
  private EnumMultiset(Class<E> type) {
    this.type = type;

     * Checks if the specified field is transient.
     *
     * @param field
     *            the field to check
     * @return true if transient, false otherwise
     * @see #isTransient(int)
     */
    public static boolean isTransient(final Field field) {
        return isTransient(field.getModifiers());
    }

    /**
     * Checks if the specified modifier is transient.
     *
     * @param modifier

  static final double MAX_LOAD_FACTOR = 1.2;

  private final transient @Nullable ImmutableMapEntry<K, V> @Nullable [] keyTable;
  private final transient @Nullable ImmutableMapEntry<K, V> @Nullable [] valueTable;
  @VisibleForTesting final transient Entry<K, V>[] entries;
  private final transient int mask;
  private final transient int hashCode;

  static <K, V> ImmutableBiMap<K, V> fromEntries(Entry<K, V>... entries) {

        return severity == Severity.RECOVERABLE || severity == Severity.TRANSIENT;
    }

    /**
     * Checks if retry should be attempted
     *
     * @return true if retry is recommended
     */
    public boolean shouldRetry() {
        return severity == Severity.RECOVERABLE || severity == Severity.TRANSIENT;
    }

    /**
     * Gets recommended retry delay in milliseconds
     *

  static final ImmutableList<Object> EMPTY = new RegularImmutableList<>(new Object[0], 0);

  // The first `size` elements are non-null.
  @VisibleForTesting final transient @Nullable Object[] array;
  private final transient int size;

  RegularImmutableList(@Nullable Object[] array, int size) {
    this.array = array;
    this.size = size;
  }

  @Override
  public int size() {
    return size;

        protected String id;

        protected Long version;

        protected Long seqNo;

        protected Long primaryTerm;

        private transient RequestOptionCall<IndexRequestBuilder> indexOption;

        private transient RequestOptionCall<DeleteRequestBuilder> deleteOption;

        public DocMeta id(String id) {
            this.id = id;
            myuniqueByProperty("_id");