code: def create(cls, trial_id, training_step, objective_value):
      trial_metric = cls()
      trial_metric.trial_id = trial_id
      trial_metric.training_step = training_step
      trial_metric.objective_value = objective_value
      trial_metric.save()
      return trial_metric
  
file_path: AutoGL/autogl/module/hpo/suggestion/models.py
imports: from __future__ import unicode_literals
label_desc: Use image node_id 2 for calling the TrialMetric obj's underlying member method code with example usage: obj.create(cls, trial_id, training_step, objective_value) and returns: trial_metric