if (any disk is corrupt) return error // Always error
if (jbod inconsistent) return error // Always error.
if (disks not recognized) // Always error.

// Specific checks.
if (all disks online)
  if (all disks return format.json)
     if (jbod consistent)
        if (all disks recognized)
          return
  else
     if (all disks return format.json not found)
        return error

    assertThat(toTest)
        .isEqualTo("TestClass{field11=[Hello], field26=Optional.of(World), field31=[!!!]}");
  }

  @J2ktIncompatible // J2kt CharBuffer does not implement CharSequence so not recognized as empty
  @GwtIncompatible // CharBuffer not available
  public void testToStringOmitEmptyValues_charBuffer() {
    String toTest =
        MoreObjects.toStringHelper(new TestClass())
            .omitEmptyValues()

  /**
   * Returns an immutable set containing each of {@code elements}, minus duplicates, in the order
   * each appears first in the source collection.
   *
   * <p><b>Performance note:</b> This method will sometimes recognize that the actual copy operation
   * is unnecessary; for example, {@code copyOf(copyOf(anArrayList))} will copy the data only once.
   * This reduces the expense of habitually making defensive copies at API boundaries. However, the

   *
   * <p><b>Warning: do not depend</b> on the behavior of this method.
   *
   * <p>Historically, {@code Equivalence} instances in this library have implemented this method to
   * recognize certain cases where distinct {@code Equivalence} instances would in fact behave
   * identically. However, as code migrates to {@code java.util.function}, that behavior will
   * disappear. It is best not to depend on it.
   */

         * implementation of TypeVariable, but the behavior of the built-in implementation differs
         * across platforms:
         *
         * - Under the JDK, the built-in TypeVariable's equals() method doesn't recognize instances
         *   of our TypeVariable implementation.
         *
         * - Under Android, it does.
         *
         * We want users to see the same behavior when they compare a built-in TypeVariable against

   * identically to this equivalence.
   *
   * <p><b>Warning: do not depend</b> on the behavior of this method.
   *
   * <p>Historically, {@code Equivalence} instances in this library have implemented this method to
   * recognize certain cases where distinct {@code Equivalence} instances would in fact behave
   * identically. However, as code migrates to {@code java.util.function}, that behavior will
   * disappear. It is best not to depend on it.
   */

     */
    private void checkUnknownElement(XmlPullParser parser, boolean strict) throws XmlPullParserException, IOException {
        if (strict) {
            throw new XmlPullParserException("Unrecognised tag: '" + parser.getName() + "'", parser, null);
        }

        for (int unrecognizedTagCount = 1; unrecognizedTagCount > 0; ) {
            int eventType = parser.next();

 *
 * <ul>
 *   <li>Implementations can be generally assumed to prioritize memory efficiency, then speed of
 *       access, and lastly speed of creation.
 *   <li>The {@code copyOf} methods will sometimes recognize that the actual copy operation is
 *       unnecessary; for example, {@code copyOf(copyOf(anArrayList))} should copy the data only
 *       once. This reduces the expense of habitually making defensive copies at API boundaries.

 *
 * <ul>
 *   <li>Implementations can be generally assumed to prioritize memory efficiency, then speed of
 *       access, and lastly speed of creation.
 *   <li>The {@code copyOf} methods will sometimes recognize that the actual copy operation is
 *       unnecessary; for example, {@code copyOf(copyOf(anArrayList))} should copy the data only
 *       once. This reduces the expense of habitually making defensive copies at API boundaries.

    /**
     * Deletes a search log entry based on its type.
     *
     * @param e The log entity to delete (ClickLog, FavoriteLog, UserInfo, or SearchLog)
     * @throws FessSystemException if the entity type is not recognized
     */
    public void deleteSearchLog(final Object e) {
        if (e instanceof final ClickLog clickLog) {
            clickLogBhv.delete(clickLog);
        } else if (e instanceof final FavoriteLog favoriteLog) {