'Add to the parser the options common to all the
user actions'

def __init__(self):

    super(user, self).__init__()
    self.parser.add_option('-U', '--ulist', help='File    listing    the    users', type='string', default=None, metavar='USER_FLIST')
    self.topic_parse_info = topic_common.item_parse_info(attribute_name='users', filename_option='ulist', use_leftover=True)
