code: def restore(self, checkpoint):
      with open(checkpoint, "r") as fin:
          self.model = model_from_json(json.load(fin))
      self.model_init = True
  
imports: import json
  import numpy
  from prophet import Prophet
  from prophet.serialize import model_to_json, model_from_json
  from prophet.diagnostics import performance_metrics
  from prophet.diagnostics import cross_validation
  from zoo.orca.automl.metrics import Evaluator
  from zoo.orca.automl.model.abstract import BaseModel, ModelBuilder
label_desc: Use image node_id 8 for calling the ProphetModel obj's underlying member method code with example usage: obj.restore(checkpoint) without return types