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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 toProtocolElement(self):
 """ Returns the representation of this CallSet as the corresponding ProtocolElement. """

        variantSet = self.getParentContainer()
        gaCallSet = protocol.CallSet(
            biosample_id=self.getBiosampleId())
        if variantSet.getCreationTime():
            gaCallSet.created = variantSet.getCreationTime()
        if variantSet.getUpdatedTime():
            gaCallSet.updated = variantSet.getUpdatedTime()
        gaCallSet.id = self.getId()
        gaCallSet.name = self.getLocalId()
        gaCallSet.variant_set_ids.append(variantSet.getId())
        self.serializeAttributes(gaCallSet)
        return gaCallSet