```java
import org.codelibs.core.collection.CollectionsUtil;
import java.util.SequencedCollection;

// Enhanced collection creation
List<String> list = CollectionsUtil.newArrayList();
Map<String, Object> map = CollectionsUtil.newLinkedHashMap();
Set<String> caseInsensitiveSet = new CaseInsensitiveSet<>();

// Java 21 Sequenced Collections support
SequencedCollection<String> sequenced = CollectionsUtil.newLinkedHashSet();

   *
   * <p><b>{@code Stream} equivalent:</b> {@code stream.findFirst().orElse(defaultValue)}
   *
   * <p><b>Java 21+ users:</b> if {code iterable} is a {@code SequencedCollection} (e.g., any list),
   * consider using {@code collection.getFirst()} instead. Note that if the collection is empty,
   * {@code getFirst()} throws a {@code NoSuchElementException}, while this method returns the

   *
   * <p><b>{@code Stream} equivalent:</b> {@code stream.findFirst().orElse(defaultValue)}
   *
   * <p><b>Java 21+ users:</b> if {code iterable} is a {@code SequencedCollection} (e.g., any list),
   * consider using {@code collection.getFirst()} instead. Note that if the collection is empty,
   * {@code getFirst()} throws a {@code NoSuchElementException}, while this method returns the