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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_columns(self, blueprint):
 """ Get the blueprint's columns definitions. :param blueprint: The blueprint :type blueprint: Blueprint :rtype: list """

        columns = []

        for column in blueprint.get_added_columns():
            sql = self.wrap(column) + ' ' + self._get_type(column)

            columns.append(self._add_modifiers(sql, blueprint, column))

        return columns