code: private static boolean isDefaultStringAttributeValue(String value)
      {
          if (value == null)
          {
              return true;
          }
          else if (value.length() == 0)
          {
              return true;
          }
          else
          {
              return false;
          }
      }
docs: Check if the value is the default for String type attributes (null or "").
  
  @param value
  @return