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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def filter(self, *filters, **kw):
 """ Return a new S instance with filter args combined with existing set with AND. :arg filters: this will be instances of F :arg kw: this will be in the form of ``field__action=value`` Examples: By default, everything is combined using AND. If you provide multiple filters in a single filter call, those are ANDed together. If you provide multiple filters in multiple filter calls, those are ANDed together. If you want something different, use the F class which supports ``&`` (and), ``|`` (or) and ``~`` (not) operators. Then call filter once with the resulting F instance. See the documentation on :py:class:`elasticutils.F` for more details on composing filters with F. See the documentation on :py:class:`elasticutils.S` for more details on adding support for new filter types. """

        items = kw.items()
        if six.PY3:
            items = list(items)
        return self._clone(
            next_step=('filter', list(filters) + items))