@rule('<STR_LIT>')<EOL><INDENT>def visit_dottable_filter(self, _, children):<DEDENT>
return children[<NUM_LIT:0>]<EOL>
A filter that can be preceded by a dot. Could be a number (not full slice) or a filter.

        Arguments
        ---------
        _ (node) : parsimonious.nodes.Node.
        children : list
            - 0: a ``Filter`` or ``SliceFilter`` (with only ``index`` set)

        Returns
        -------
        Filter or SliceFilter
            An instance of ``Filter`` if a filter, or ``SliceFilter`` if a number.

        Example
        -------

        >>> FiltersWithSlicingParserMixin('1', default_rule='DOTTABLE_FILTER').data
        [1]
        >>> FiltersWithSlicingParserMixin('foo', default_rule='DOTTABLE_FILTER').data
        .foo