code: def assert_log(self, step, logtype, value, exact_match=True):
      raise NotImplementedError()
  
imports: import sys
  import os
  from metaflow.exception import MetaflowException
  from metaflow import current
  from metaflow.cards import get_cards
  from metaflow.plugins.cards.exception import CardNotPresentException
label_desc: Use image node_id 7 for calling the MetaflowCheck obj's underlying member method code with example usage: obj.assert_log(step, logtype, value, exact_match) without return types