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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 include_fields(self, *args):
 r""" Include fields is the fields that you want to be returned when searching. These are in addition to the fields that are always included below. :param args: items passed in will be turned into a list :returns: :class:`Search` The following fields are always included in search: 'version', 'id', 'summary', 'status', 'op_sys', 'resolution', 'product', 'component', 'platform' """

        for arg in args:
            self._includefields.append(arg)
        return self