code: def decode(self, tensor):
      if len(tensor) > 0 and isinstance(tensor[0], list):
          return [self.decode(t) for t in tensor]
      else:
          # not idempotent, since clean string
          x = (self.mapping[i] for i in tensor)
          x = "".join(i for i, _ in itertools.groupby(x))
          x = x.replace(self.char_blank, "")
          # x = x.strip()
          return x
  
imports: import collections
  import itertools
label_desc: Use image node_id 3 for calling the LanguageModel obj's underlying member method code with example usage: obj.decode(tensor) and returns: unknown, x