SubstValueForCode(nsString& aStr, const PRUnichar * aUKey, const PRUnichar * aUStr)
SubstValueForCode(nsString& aStr, PRUnichar * aUKey, PRUnichar * aUStr)
SubstValueForCode(nsString& aStr, const PRUnichar * aUKey, const PRUnichar * aUStr){  nsAutoString str;  str = aUStr;  if (str.Length() == 0) {    aStr.SetLength(0);  } else {    aStr.ReplaceSubstring(aUKey, aUStr);  }}