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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(self, columns=None):
 """ Execute the query as a "select" statement :param columns: The columns to get :type columns: list :return: The result :rtype: Collection """

        if not columns:
            columns = ["*"]

        original = self.columns

        if not original:
            self.columns = columns

        results = self._processor.process_select(self, self._run_select())

        self.columns = original

        return Collection(results)