code: @Override
  	public void writeResult(Map<BioPAXElement, List<Match>> matches, OutputStream out)
  		throws IOException
  	{
  		writeResultAsSIF(matches, out, true, getSourceLabel(), getTargetLabel());
  	}
docs: Writes the result as "A B", where A and B are gene symbols, and whitespace is tab.
  @param matches pattern search result
  @param out output stream