code: def make_dummy_json_st(
      n_utts=10,
      ilen_range=(100, 300),
      olen_range=(10, 300),
      olen_asr_range=(10, 300),
      idim=83,
      odim=52,
  ):
      ilens = np.random.randint(ilen_range[0], ilen_range[1], n_utts)
      olens = np.random.randint(olen_range[0], olen_range[1], n_utts)
      olens_asr = np.random.randint(
          olen_asr_range[0], olen_asr_range[1], n_utts
      )
      dummy_json = {}
      for idx in range(n_utts):
          input = [{"shape": [ilens[idx], idim]}]
          output = [
              {"shape": [olens[idx], odim]},
              {"shape": [olens_asr[idx], odim]},
          ]
          dummy_json["utt_%d" % idx] = {
              "input": input,
              "output": output,
          }
      return dummy_json
  
label_desc: Use image node_id 2 for calling a global function with example usage: make_dummy_json_st(n_utts, ilen_range, olen_range, olen_asr_range, idim, odim) and returns: dummy_json