*/
package com.google.common.collect;


/**
 * GWT emulation of {@link JdkBackedImmutableBiMap}. Never used, but must exist so that the client
 * is willing to deserialize maps that were this type on the server.
 */
@ElementTypesAreNonnullByDefault
class JdkBackedImmutableBiMap<K, V> extends RegularImmutableBiMap<K, V> {
  private JdkBackedImmutableBiMap(ImmutableMap<K, V> delegate, ImmutableBiMap<V, K> inverse) {
    super(delegate, inverse);

    return entries.size();
  }

  @LazyInit @RetainedWith @CheckForNull private transient JdkBackedImmutableBiMap<V, K> inverse;

  @Override
  public ImmutableBiMap<V, K> inverse() {
    JdkBackedImmutableBiMap<V, K> result = inverse;
    if (result == null) {
      inverse =
          result =
              new JdkBackedImmutableBiMap<>(
                  new InverseEntries(), backwardDelegate, forwardDelegate);