private static ObjectReference getNextObject(ObjectReference obj, int size) {
protected static ObjectReference getNextObject(ObjectReference obj, int size) {
  private static ObjectReference getNextObject(ObjectReference obj, int size) {    if (VM.VerifyAssertions) VM._assert(OTHER_HEADER_BYTES == 0);        return getObjectFromStartAddress(obj.toAddress().plus(size).minus(OBJECT_REF_OFFSET));  }