code: public void setSummary( final CharSequence summary) {
  		if ( summary != null) format.getHeader().createEntry( SUMMARY, summary);
  	}
docs: <b>Required Field</b>. Sets the summary text for the file. The summary is generally a short, one line description of the
  function of the package, and is often shown by RPM tools.
  
  @param summary summary text.