code: public final static ExtendedBoolean getExtendedBooleanByIndex(int index) {
          if (tc.isDebugEnabled())
              SibTr.info(tc, "Index = " + index);
          return indexSet[index + 1];
      }
docs: Returns the corresponding ExtendedBoolean for a given index.
  <p>
  This method should NOT be called by any code outside SIB. It is
  only public so that it can be accessed by sub-packages.
  
  @param index The index for which an ExtendedBoolean is required.
  @return The corresponding ExtendedBoolean