code: def fitted(self):
      return self.slots_keywords is not None
  
file_path: snips-nlu/snips_nlu/slot_filler/keyword_slot_filler.py
imports: from __future__ import unicode_literals
  import json
  from snips_nlu.common.utils import json_string
  from snips_nlu.preprocessing import tokenize
  from snips_nlu.result import unresolved_slot
  from snips_nlu.slot_filler import SlotFiller
label_desc: Use image node_id 2 for calling the KeywordSlotFiller obj's underlying member method code with example usage: obj.fitted() and returns: unknown