class_docstr: mock nlu-joint data class for nlu-joint task.
class_docstr_tok: ["mock","nlu-joint","data","class","for","nlu-joint","task","."]
code: def download(self) -> bool:
      return True
  
file_path: delta/delta/data/datasets/mock_text_nlu_joint_data.py
imports: import os
  import traceback
  from absl import logging
  from delta.data.datasets.base_dataset import BaseDataSet
  from delta.data.datasets.utils import mock_data
  from delta.utils.register import registers
label_desc: Use image node_id 2 for calling the MockTextNLUJointData obj's underlying member method code with example usage: obj.download() and returns: True