def self_build(self, field_pos_list=None):
        return _self_build(self, field_pos_list)
rebuilds the StockState object
dataset/ETHPy150Open catalyst256/gobbler/gobbler/layers/http.py/HTTPRequest.self_build--crossover with--dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/commtrack/processing.py/rebuild_stock_state