class_docstr: mock match data class for match task.
class_docstr_tok: ["mock","match","data","class","for","match","task","."]
code: def __init__(self, project_dir):
      super().__init__(project_dir)
      self.train_file = "train.txt"
      self.dev_file = "dev.txt"
      self.test_file = "test.txt"
      self.data_files = [self.train_file, self.dev_file, self.test_file]
      self.config_files = ["rnn_match_mock.yml"]
      self.download_files = []
      self.text_vocab = "text_vocab.txt"
  
      # samples with label
      self.samples = [
          "0\tHow should I approach forgiveness?\tI got chickenpox as a child.",
          "1\tI love china。\tI love china very much。",
      ]
      self.text_vocab_list = [
          "<unk>\t0",
          "</s>\t1",
          "how\t2",
          "should\t3",
          "i\t4",
          "approach\t5",
          "forgiveness\t6",
          "got\t7",
          "chickenpox\t8",
          "as\t9",
          "a\t10",
          "child\t11",
          "love\t12",
          "china\t13",
          "very\t14",
          "much\t15",
      ]
  
file_path: delta/delta/data/datasets/mock_text_match_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 1 to create a new MockTextMatchData object from inherited base classes: BaseDataSet with example: obj = MockTextMatchData(project_dir)