def initialize_post(self):
        self.model = self.get_model()
        for key in self.model.keys():
            self.model.set(key, self.json_arguments.get(key))
Invoked by the ModelAPIRequestHandler.post method prior to taking
dataset/ETHPy150Open gmr/tinman/tinman/handlers/mixins.py/ModelAPIMixin.initialize_post