docs: def template_args(subparsers):
      """Add command line options for the template operation"""
      template_parser = subparsers.add_parser('template')
      template_parser.add_argument('template',
                                   help='Template source',
                                   nargs='?')
      template_parser.add_argument('destination',
                                   help='Path to write rendered template',
                                   nargs='?')
      template_parser.add_argument('vault_paths',
                                   help='Full path(s) to secret',
                                   nargs='*')
      template_parser.add_argument('--builtin-list',
                                   dest='builtin_list',
                                   help='Display a list of builtin templates',
                                   action='store_true',
                                   default=False)
      template_parser.add_argument('--builtin-info',
                                   dest='builtin_info',
                                   help='Display information on a '
                                   'particular builtin template')
      vars_args(template_parser)
      mapping_args(template_parser)
      base_args(template_parser)