@DoNotCall("Always throws UnsupportedOperationException")
  @CheckForNull
  public <T extends B> T putInstance(Class<T> type, T value) {
    throw new UnsupportedOperationException();
  }

  Object readResolve() {
    return isEmpty() ? of() : this;
  }

    private final Map<Class<? extends @NonNull B>, B> backingMap;

    SerializedForm(Map<Class<? extends @NonNull B>, B> backingMap) {
      this.backingMap = backingMap;
    }

    Object readResolve() {
      return create(backingMap);
    }

    private static final long serialVersionUID = 0;
  }

    final DiscreteDomain<C> domain;

    private SerializedForm(Range<C> range, DiscreteDomain<C> domain) {
      this.range = range;
      this.domain = domain;
    }

    private Object readResolve() {
      return new RegularContiguousSet<>(range, domain);
    }
  }

  @GwtIncompatible // serialization
  @J2ktIncompatible
  @Override
  Object writeReplace() {

          table.rowKeySet().toArray(),
          table.columnKeySet().toArray(),
          table.values().toArray(),
          cellRowIndices,
          cellColumnIndices);
    }

    Object readResolve() {
      if (cellValues.length == 0) {
        return of();
      }
      if (cellValues.length == 1) {
        return of(rowKeys[0], columnKeys[0], cellValues[0]);
      }

    private final ImmutableBiMap<K, V> forward;

    InverseSerializedForm(ImmutableBiMap<K, V> forward) {
      this.forward = forward;
    }

    Object readResolve() {
      return forward.inverse();
    }

    private static final long serialVersionUID = 1;
  }

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")

      implements Serializable {
    private final HashBiMap<K, V> bimap;

    InverseSerializedForm(HashBiMap<K, V> bimap) {
      this.bimap = bimap;
    }

    Object readResolve() {
      return bimap.inverse();
    }
  }

  /**
   * @serialData the number of entries, first key, first value, second key, second value, and so on.
   */

  }

  private boolean isPartialView() {
    return start > 0 || end < array.length;
  }

  Object writeReplace() {
    return trimmed();
  }

  Object readResolve() {
    return isEmpty() ? EMPTY : this;
  }

  }

  private boolean isPartialView() {
    return start > 0 || end < array.length;
  }

  Object writeReplace() {
    return trimmed();
  }

  Object readResolve() {
    return isEmpty() ? EMPTY : this;
  }

    private final ImmutableMap<Range<K>, V> mapOfRanges;

    SerializedForm(ImmutableMap<Range<K>, V> mapOfRanges) {
      this.mapOfRanges = mapOfRanges;
    }

    Object readResolve() {
      if (mapOfRanges.isEmpty()) {
        return of();
      } else {
        return createRangeMap();
      }
    }

    Object createRangeMap() {

      stream.defaultReadObject();
      setInverse((AbstractBiMap<V, K>) requireNonNull(stream.readObject()));
    }

    @GwtIncompatible // Not needed in the emulated source.
    @J2ktIncompatible
    Object readResolve() {
      return inverse().inverse();
    }

    @GwtIncompatible // Not needed in emulated source.
    @J2ktIncompatible
    private static final long serialVersionUID = 0;
  }