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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_str(self):
        '''
        Returns string representation of a social account. Includes the name
        of the user.
        '''
        dflt = super(DataportenAccount, self).to_str()
        return '%s (%s)' % (
            self.account.extra_data.get('name', ''),
            dflt,
        )