return (E) requireNonNull(array[index]);
  }

  // TODO(lowasser): benchmark optimizations for equals() and see if they're worthwhile

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")
  @Override
  @J2ktIncompatible
  @GwtIncompatible
    Object writeReplace() {
    return super.writeReplace();
  }

    return entries.get(index);
  }

  @Override
  boolean isPartialView() {
    return false;
  }

  @Override
  public int size() {
    return Ints.saturatedCast(size);
  }

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")
  @Override
  @J2ktIncompatible
  @GwtIncompatible
    Object writeReplace() {
    return super.writeReplace();
  }

  }

  @Override
  public final int hashCode() {
    return element.hashCode();
  }

  @Override
  public String toString() {
    return '[' + element.toString() + ']';
  }

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")
  @Override
  @J2ktIncompatible
  @GwtIncompatible
    Object writeReplace() {
    return super.writeReplace();
  }

   *   <li>If there is any non-private constructor or non-private static factory method declared by
   *       {@code cls}, all non-private instance methods will be checked too using the instance
   *       created by invoking the constructor or static factory method.
   *   <li>If there is any non-private constructor or non-private static factory method declared by
   *       {@code cls}:
   *       <ul>

      return index;
    } else {
      return size() - 1 - index;
    }
  }

  @Override
  boolean isPartialView() {
    return forward.isPartialView();
  }

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")
  @Override
  @J2ktIncompatible // serialization
  Object writeReplace() {
    return super.writeReplace();
  }

  }

  /**
   * Returns {@code true} if this is an overridable method. Constructors, private, static or final
   * methods, or methods declared by final classes are not overridable.
   */
  public abstract boolean isOverridable();

  /** Returns {@code true} if this was declared to take a variable number of arguments. */
  public abstract boolean isVarArgs();

  /**

      if (result == null) {
        return lazyInverse = new SingletonImmutableBiMap<>(singleValue, singleKey, this);
      } else {
        return result;
      }
    }
  }

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")
  @Override
  @J2ktIncompatible
  @GwtIncompatible
    Object writeReplace() {
    return super.writeReplace();
  }

    return new RegularImmutableMap.KeySet<>(this, keyList);
  }

  @Override
  boolean isPartialView() {
    return false;
  }

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")
  @Override
  @J2ktIncompatible
  @GwtIncompatible
    Object writeReplace() {
    return super.writeReplace();
  }

    }

    @Override
    boolean isPartialView() {
      return true;
    }

    @Override
    public int size() {
      return contents.size();
    }

    // redeclare to help optimizers with b/310253115
    @SuppressWarnings("RedundantOverride")
    @Override
    @GwtIncompatible
    @J2ktIncompatible
        Object writeReplace() {
      return super.writeReplace();
    }

          subElementSet, cumulativeCounts, offset + from, to - from);
    }
  }

  @Override
  boolean isPartialView() {
    return offset > 0 || length < cumulativeCounts.length - 1;
  }

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")
  @Override
  @J2ktIncompatible // serialization
  Object writeReplace() {
    return super.writeReplace();
  }