code: def reload(self, hooks=None):
          
          #from argcomplete import debug
          # Parsing the command line looking for the previous options like
          # configuration file name or server section. Extra arguments
          # will be store into argv.
          args = None
  
          if os.environ.get('_ARGCOMPLETE'):
              # During argcomplete completion, parse_known_args will return an
              # empty Namespace. In this case, we feed the previous function with
              # data comming from the input completion data
              compline = os.environ.get('COMP_LINE')
              args = self.parser.parse_known_args(compline.split()[1:])[0]
          else:
              args = self.parser.parse_known_args()[0]
          if hooks is not None:
              if isinstance(hooks, list):
                  for h in hooks:
                      if isinstance(h, SectionHook):
                          h(args)
              else:
                  if isinstance(hooks, SectionHook):
                      hooks(args)
  
          # After the first argument parsing, for configuration reloading,
          # we can add the help action.
          self.parser.add_argument('-h', '--help', action='help',
                                   default=argparse.SUPPRESS,
                                   help='show this help message and exit')
  
          # Reloading
          if self.use_config_file:
              # pylint: disable-msg=W0621
              log = logging.getLogger('argtoolbox')
              log.debug("reloading configuration ...")
              if args.config_file:
                  self.file_parser = ConfigParser.SafeConfigParser()
                  discoveredFileList = self.file_parser.read(args.config_file)
                  log.debug("discoveredFileList: " + str(discoveredFileList))
              for s in self.sections.values():
                  log.debug("loading section : " + s.get_section_name())
                  s.reset()
                  s.load(self.file_parser)
              log.debug("configuration reloaded.")
docs: This method will reload the configuration using input argument
          from the command line interface.
          1. pasing arguments
          2. applying hooks
          3. addding help argument
          4. reloading configuration using cli argument like a configuration
          file name.