code: public FlyWeightFlatXmlDataSet build(Reader xmlReader) throws DataSetException {
          InputSource inputSource = new InputSource(xmlReader);
          return buildInternal(inputSource);
      }
docs: Sets the flat XML input source from which the {@link FlyWeightFlatXmlDataSet} is to be built
  
  @param xmlReader The flat XML input as {@link Reader}
  @return The created {@link FlyWeightFlatXmlDataSet}
  @throws DataSetException