class_docstr: Filters out examples from users who trigger safety classifier at all throughout
  conversation.
  
  Do NOT use directly.
class_docstr_tok: ["Filters","out","examples","from","users","who","trigger","safety","classifier","at","all","throughout","conversation",".","Do","NOT","use","directly","."]
code: def _filter_out_message(self, label_message, message_history):
      adversarial_human = any(
          [
              m["sender"] == "human" and not self._is_safe(m)
              for m in message_history
          ]
      )
      return adversarial_human
  
imports: import os
  import json
  from copy import deepcopy
  from parlai.core.message import Message
  from parlai.utils.data import DatatypeHelper
  from parlai.core.teachers import ChunkTeacher
  from .build import build
label_desc: Use image node_id 1 for calling the FilterOutAdversarialHumansBaseTeacher obj's underlying member method code with example usage: obj._filter_out_message(label_message, message_history) and returns: adversarial_human