class_docstr: mock seq2seq data class seq2seq task.
class_docstr_tok: ["mock","seq2seq","data","class","seq2seq","task","."]
code: def download(self) -> bool:
      return True
  
file_path: delta/delta/data/datasets/mock_text_seq2seq_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 MockTextSeq2SeqData obj's underlying member method code with example usage: obj.download() and returns: True