public static long sizeOf(Object object) {
  Unsafe unsafe = getUnsafe();
  // Original : return unsafe.getAddress( normalize( unsafe.getInt(object, 4L) ) + 12L );
  // This is my elaborate breakdown of original one liner
  int addressOfKlassInObjectHeader = unsafe.getInt(object, 4L);
  long nativeAddressOfKlass = normalize(addressOfKlassInObjectHeader);
  long addressOfLayoutHelper = nativeAddressOfKlass + 12L;
  return unsafe.getAddress(addressOfLayoutHelper);
}

public static long normalize(int value) {
  if(value >= 0) return value;
  return (~0L >>> 32) & value;
}