code: def save(self, filename, incl_uniqueid=False):
          
          filename = os.path.expanduser(filename)
          f = open(filename, 'w')
          json.dump(self.to_json(incl_uniqueid=incl_uniqueid), f,
                     sort_keys=True, indent=0, separators=(',', ': '))
          f.close()
  
          return filename
docs: Save the Parameter to a JSON-formatted ASCII file
  
          :parameter str filename: relative or fullpath to the file
          :return: filename
          :rtype: str