public PlatformAddress offsetBytes(int offset) {
   return PlatformAddressFactory.on(osaddr + offset, size - offset);
 }
 public final PlatformAddress getAddress(int offset) {
   int addr = getInt(offset);
   return PlatformAddressFactory.on(addr);
 }
 public PlatformAddress duplicate() {
   return PlatformAddressFactory.on(osaddr, size);
 }