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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_item_prices(self, package_id):
 """Get item prices. Retrieve a SoftLayer_Product_Package item prices record. :param int package_id: package identifier. :returns: A list of price IDs associated with the given package. """

        mask = 'mask[pricingLocationGroup[locations]]'

        prices = self.package_svc.getItemPrices(id=package_id, mask=mask)
        return prices