@rule('<STR_LIT>')<EOL><INDENT>def visit_args(self, _, children):<DEDENT>
return children[<NUM_LIT:0>]<EOL>
Arguments of a filter (part inside the parentheses).

        The arguments of a filter can be named or not. But unnamed ones must always come first.

        So this entry accept
            - unnamed args followed by named args
            - only unnamed args
            - only named args

        Arguments
        ---------
        _ (node) : parsimonious.nodes.Node.
        children : list
            - 0: list of instances of subclasses of ``.resources.Arg``.

        Returns
        -------
        list(.resources.Arg)
            List of  instances of subclasses of ``.resources.Arg``.

        Example
        -------

        >>> ArgsParserMixin(r'1', default_rule='ARGS').data
        [1]
        >>> ArgsParserMixin(r'1, 2', default_rule='ARGS').data
        [1, 2]
        >>> ArgsParserMixin(r'1,foo="bar"', default_rule='ARGS').data
        [1, foo="bar"]
        >>> ArgsParserMixin(r'1, 2, foo="bar", bar="qux"', default_rule='ARGS').data
        [1, 2, foo="bar", bar="qux"]
        >>> ArgsParserMixin(r'foo="bar"', default_rule='ARGS').data
        [foo="bar"]
        >>> ArgsParserMixin(r'foo="bar",bar="qux"', default_rule='ARGS').data
        [foo="bar", bar="qux"]