code: def optimized_load(self, *args, **kwargs):
      return kwargs.get("row")
  
imports: import unittest
  from typing import Any, Dict, List
  from parlai.crowdsourcing.utils.analysis import AbstractResultsCompiler
  from collections import defaultdict
label_desc: Use image node_id 1 for calling the MockMephistoDB obj's underlying member method code with example usage: obj.optimized_load() and returns: kwargs