code: def save(self, file):
      dill.dump(self, open(file, "wb"), recurse=True)
  
imports: from abc import ABC, abstractmethod
  import dill
  from munch import Munch
  import numpy
  import inspect
  from .expect import iter_with_optional, Expect
  from .viewer.test_summarizer import TestSummarizer
label_desc: Use image node_id 2 for calling the AbstractTest obj's underlying member method code with example usage: obj.save(file) without return types