code: def get_valid_starting_types(self):
      return set([TRUTH_TYPE])
  
file_path: magnitude/pymagnitude/third_party/allennlp/tests/semparse/action_space_walker_test.py
imports: from __future__ import absolute_import
  from nltk.sem.logic import TRUTH_TYPE
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.semparse.worlds.world import World
  from allennlp.semparse import ActionSpaceWalker
label_desc: Use image node_id 1 for calling the FakeWorldWithAssertions obj's underlying member method code with example usage: obj.get_valid_starting_types() and returns: set