@rule('<STR_LIT>')<EOL><INDENT>def visit_next_named_resource(self, _, children):<DEDENT>
return children[<NUM_LIT:1>]<EOL>
A resource in the query preceded by a coma, to define a resource following an other one.

        Arguments
        ---------
        _ (node) : parsimonious.nodes.Node.
        children : list
            - 0: for ``COM`` (coma): ``None``.
            - 1: for ``NAMED_RESOURCE``: an instance of a subclass of ``.resources.Resource``.

        Returns
        -------
        .resources.Resource
            An instance of a subclass of ``.resources.Resource``.

        Example
        -------

        >>> DataQLParser(r', foo', default_rule='NEXT_NAMED_RESOURCE').data
        <Field[foo] />
        >>> DataQLParser(r', foo:bar', default_rule='NEXT_NAMED_RESOURCE').data
        <Field[foo] .bar />
        >>> DataQLParser(r', bar[name]', default_rule='NEXT_NAMED_RESOURCE').data
        <List[bar]>
          <Field[name] />
        </List[bar]>