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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 get_experiment_spec(self, matrix_declaration):
 """Returns an experiment spec for this group spec and the given matrix declaration."""

        parsed_data = Parser.parse(self, self._data, matrix_declaration)
        del parsed_data[self.HP_TUNING]
        validator.validate(spec=self, data=parsed_data)
        return ExperimentSpecification(values=[parsed_data, {'kind': self._EXPERIMENT}])