@Override
 @ForceInline
 public long readLong(long offset) {
   return memory.readLong(address + translate(offset));
 }
 public static long lowestPossiblyFreeChunkTiered(long address) {
   return memory.readLong(address + LOWEST_POSSIBLY_FREE_CHUNK_TIERED_OFFSET);
 }
 public static long prevTierIndex(long address) {
   return memory.readLong(address + PREV_TIER_INDEX_OFFSET);
 }
 public static long nextTierIndex(long address) {
   return memory.readLong(address + NEXT_TIER_INDEX_OFFSET);
 }