code: def try_primary_metric(self, tester, input_func):
      return self.try_keys([self.primary_metric], tester, input_func)
  
imports: import os
  import sqlite3
  import torch
  from .None import common_functions
label_desc: Use image node_id 13 for calling the HookContainer obj's underlying member method code with example usage: obj.try_primary_metric(tester, input_func) and returns: self