code: def wasvalid(self):
      return not hasattr(self, "exc")
  
imports: import os
  import platform
  import sys
  import traceback
  import six
  from ..outcomes import fail
  from ..outcomes import TEST_OUTCOME
label_desc: Use image node_id 3 for calling the MarkEvaluator obj's underlying member method code with example usage: obj.wasvalid() and returns: unknown