def save_model(self, model_filename):
        line = "save_{}|".format(model_filename)
        self.vw_process.sendline(line)
        # No response is expected in this case
Add an axis to this chart in the given position.
dataset/ETHPy150Open mokelly/wabbit_wappa/wabbit_wappa/__init__.py/VW.save_model--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/_internal/graphy/common.py/BaseChart.AddAxis