/**
 * Utility class for merging SuggestItem objects.
 * Centralizes merge logic to reduce complexity in SuggestItem.
 *
 * <p>This class provides methods for merging two SuggestItem instances,
 * combining their fields, frequencies, and other attributes while
 * maintaining uniqueness where appropriate.
 */
public final class SuggestItemMerger {

    private SuggestItemMerger() {
        // Utility class
    }

    /**