*
   * @param string the string to test and possibly return
   * @return {@code string} itself if it is non-null; {@code ""} if it is null
   */
  public static String nullToEmpty(@Nullable String string) {
    return Platform.nullToEmpty(string);
  }

  /**
   * Returns the given string if it is nonempty; {@code null} otherwise.
   *

    assertEquals(3, uniqueEntries.size());
  }

  // Wrapper of EnumMultiset factory methods, because we need to skip create(Class).
  // create(Enum1.class) is equal to create(Enum2.class) but testEquals() expects otherwise.
  // For the same reason, we need to skip create(Iterable, Class).
  private static class EnumMultisetFactory {
    @Keep // used reflectively by testEquals

## Concepts

- If an object is under legal hold, it cannot be deleted unless the legal hold is explicitly removed for the respective version id. DeleteObjectVersion() would fail otherwise.
- In `Compliance` mode, objects cannot be deleted by anyone until retention period has expired for the given version id. If user has governance bypass permissions, an object's retention date can be extended in `Compliance` mode.

     * the given URL. If the URL matches the exclusion pattern, the method returns {@code false},
     * indicating that the URL should not be crawled. Otherwise, it returns {@code true}.
     *
     * @param paramMap the parameter map containing potential exclusion patterns
     * @param url the URL to be checked for crawlability

     * @param id the document ID to update
     * @param field the field name to update
     * @param value the new value for the field
     * @return true if the update was successful, false otherwise
     */
    public boolean updateDocument(final SearchEngineClient searchEngineClient, final String id, final String field, final Object value) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

                sums.put(extension, observer.getActualChecksum());
            }

            // We do this in here so we can checksum the artifact metadata too, otherwise it could be metadata itself
            for (String extension : checksums.keySet()) {
                // TODO shouldn't need a file intermediary - improve wagon to take a stream

                   $FESS_HOME/bin/fess.in.sh \
                   "`dirname "$0"`"/fess.in.sh; do
        if [ -r "$include" ]; then
            . "$include"
            break
        fi
    done
# ...otherwise, source the specified include.
elif [ -r "$FESS_INCLUDE" ]; then
    . "$FESS_INCLUDE"
fi

if [ -x "$JAVA_HOME/bin/java" ]; then
    JAVA="$JAVA_HOME/bin/java"
else
    JAVA=`which java`
fi

import java.util.Optional;
import java.util.stream.Collector;
import org.jspecify.annotations.Nullable;

/**
 * Collectors not present in {@code java.util.stream.Collectors} that are not otherwise associated
 * with a {@code com.google.common} type.
 *
 * @author Louis Wasserman
 * @since 21.0
 */
@GwtCompatible
public final class MoreCollectors {

  /*

}

// shouldRemoveRemoteObject determines if a transitioned object should be
// removed from remote tier. If remote object is to be deleted, returns the
// corresponding tier deletion journal entry and true. Otherwise returns empty
// jentry value and false.
func (os *objSweeper) shouldRemoveRemoteObject() (jentry, bool) {
	if os.TransitionStatus != lifecycle.TransitionComplete {
		return jentry{}, false
	}

        result.set(t.getComponentType());
      }
    }.visit(type);
    return result.get();
  }

  /**
   * Returns {@code ? extends X} if any of {@code bounds} is a subtype of {@code X[]}; or null
   * otherwise.
   */
  private static @Nullable Type subtypeOfComponentType(Type[] bounds) {
    for (Type bound : bounds) {
      Type componentType = getComponentType(bound);
      if (componentType != null) {