class_docstr: The dev and test set are the same, but the training set has been augmented using the
  other utterances.
  
  Moreover, only 16 candidates are used (including the right one)
code: def get_suffix(self):
      if self.split != "train":
          return ""
      return "_sampled"
  
imports: from parlai.core.teachers import FixedDialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import json
  import os
  import random
label_desc: Use image node_id 1 for calling the DSTC7TeacherAugmentedSampled obj's underlying member method code with example usage: obj.get_suffix() and returns: str, str