@classmethod
def get_from_sale_item(cls, store, sale_item):
    """Get the |workorderitem| given one |saleitem|

        :param store: a store
        :param sale_item: a |saleitem|
        :returns: The |workorderitem| related to the |saleitem|
        :rtype: |workorderitem|
        """
    return store.find(cls, cls.sale_item_id == sale_item.id).one()
