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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_validators(self):
 """ Determine the set of validators to use when instantiating serializer. """

        # If the validators have been declared explicitly then use that.
        validators = getattr(getattr(self, 'Meta', None), 'validators', None)
        if validators is not None:
            return validators[:]

        # Otherwise use the default set of validators.
        return (
            self.get_unique_together_validators() +
            self.get_unique_for_date_validators()
        )