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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 runGetCallSet(self, id_):
 """ Returns a callset with the given id """

        compoundId = datamodel.CallSetCompoundId.parse(id_)
        dataset = self.getDataRepository().getDataset(compoundId.dataset_id)
        variantSet = dataset.getVariantSet(compoundId.variant_set_id)
        callSet = variantSet.getCallSet(id_)
        return self.runGetRequest(callSet)