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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 to_json(self, incl_uniqueid=False):
 """ Convert the ParameterSet to a json-compatible dictionary :return: list of dictionaries """

        lst = []
        for context in _contexts:
            lst += [v.to_json(incl_uniqueid=incl_uniqueid)
                    for v in self.filter(context=context,
                                         check_visible=False,
                                         check_default=False).to_list()]
        return lst