if (VM.VerifyAssertions) VM._assert(VM.BuildFor64Addr);
  public static Address fromLong(long address)    throws UninterruptibleNoWarnPragma {    if (VM.VerifyAssertions) VM._assert(VM.BuildFor64Addr);     if (VM.VerifyAssertions && VM.runningVM) VM._assert(VM.NOT_REACHED);     return new Address(address); }