code: def _parse_apps_to_sync(self):
          
          # We allow nothing by default
          apps_to_sync = set()
  
          # Is the "[applications_to_sync]" section in the cfg file ?
          section_title = 'applications_to_sync'
          if self._parser.has_section(section_title):
              apps_to_sync = set(self._parser.options(section_title))
  
          return apps_to_sync
docs: Parse the applications to backup in the config.
  
          Returns:
              set