if (VMResource.getSpace(addr) == NURSERY_SPACE)
if (VMResource.getSpace(addr) == NURSERY_SPACE) {
  static final VM_Address getForwardedReference(VM_Address object) {    if (!object.isZero()) {      VM_Address addr = VM_Interface.refToAddress(object);      if (VMResource.getSpace(addr) == NURSERY_SPACE)	if (VM_Interface.VerifyAssertions) 	  VM_Interface._assert(CopyingHeader.isForwarded(object));      return CopyingHeader.getForwardingPointer(object);    }    return object;  }