* short[]}, or {@code int[]}. When it is a {@code byte[]} or {@code short[]}, the returned value
   * is unsigned, so the range of possible returned values is 0–255 or 0–65535, respectively.
   */
  static int tableGet(Object table, int index) {
    if (table instanceof byte[]) {
      return ((byte[]) table)[index] & BYTE_MASK; // unsigned read
    } else if (table instanceof short[]) {

   * short[]}, or {@code int[]}. When it is a {@code byte[]} or {@code short[]}, the returned value
   * is unsigned, so the range of possible returned values is 0–255 or 0–65535, respectively.
   */
  static int tableGet(Object table, int index) {
    if (table instanceof byte[]) {
      return ((byte[]) table)[index] & BYTE_MASK; // unsigned read
    } else if (table instanceof short[]) {

    int tableIndex = hash & mask;
    int next = CompactHashing.tableGet(requireTable(), tableIndex);
    if (next == UNSET) { // uninitialized bucket
      if (newSize > mask) {
        // Resize and add new entry
        mask = resizeTable(mask, CompactHashing.newCapacity(mask), hash, newEntryIndex);
      } else {
        CompactHashing.tableSet(requireTable(), tableIndex, newEntryIndex + 1);
      }
    } else {

    int tableIndex = hash & mask;
    int next = CompactHashing.tableGet(requireTable(), tableIndex);
    if (next == UNSET) { // uninitialized bucket
      if (newSize > mask) {
        // Resize and add new entry
        mask = resizeTable(mask, CompactHashing.newCapacity(mask), hash, newEntryIndex);
      } else {
        CompactHashing.tableSet(requireTable(), tableIndex, newEntryIndex + 1);
      }
    } else {

    int tableIndex = hash & mask;
    int next = CompactHashing.tableGet(requireTable(), tableIndex);
    if (next == UNSET) { // uninitialized bucket
      if (newSize > mask) {
        // Resize and add new entry
        mask = resizeTable(mask, CompactHashing.newCapacity(mask), hash, newEntryIndex);
      } else {
        CompactHashing.tableSet(requireTable(), tableIndex, newEntryIndex + 1);
      }
    } else {

    int tableIndex = hash & mask;
    int next = CompactHashing.tableGet(requireTable(), tableIndex);
    if (next == UNSET) { // uninitialized bucket
      if (newSize > mask) {
        // Resize and add new entry
        mask = resizeTable(mask, CompactHashing.newCapacity(mask), hash, newEntryIndex);
      } else {
        CompactHashing.tableSet(requireTable(), tableIndex, newEntryIndex + 1);
      }
    } else {

  // Views

  /**
   * Abstract set whose {@code isEmpty()} returns whether the table is empty and whose {@code
   * clear()} clears all table mappings.
   */
  @WeakOuter
  private abstract class TableSet<T> extends ImprovedAbstractSet<T> {
    @Override
    public boolean isEmpty() {
      return backingMap.isEmpty();
    }

    @Override
    public void clear() {
      backingMap.clear();
    }

  // Views

  /**
   * Abstract set whose {@code isEmpty()} returns whether the table is empty and whose {@code
   * clear()} clears all table mappings.
   */
  @WeakOuter
  private abstract class TableSet<T> extends ImprovedAbstractSet<T> {
    @Override
    public boolean isEmpty() {
      return backingMap.isEmpty();
    }

    @Override
    public void clear() {
      backingMap.clear();
    }

    private static final Logger logger = LogManager.getLogger(ViewHelper.class);

    /** Request attribute key for screen width */
    protected static final String SCREEN_WIDTH = "screen_width";

    /** Tablet width threshold for responsive design */
    protected static final int TABLET_WIDTH = 768;

    /** HTTP header name for content disposition */
    protected static final String CONTENT_DISPOSITION = "Content-Disposition";