code: def return_loss(self, model):
      if model == "init":
          return (
              self.initial.test_loss,
              self.initial.ci_lower,
              self.initial.ci_upper,
          )
      elif model == "opt":
          return (
              self.optimized.test_loss,
              self.optimized.ci_lower,
              self.optimized.ci_upper,
          )
  
file_path: vowpal_wabbit/demo/cats/utility/get_offline_results.py
imports: import sys
  import getopt
  import math
  from confidence_interval import ConfidenceInterval
label_desc: Use image node_id 3 for calling the EvaluatorOffline obj's underlying member method code with example usage: obj.return_loss(model) and returns: self,  self,  self, self,  self,  self