code: def corpus(self, tasks_base_path):
      return flair.datasets.ClassificationCorpus(
          tasks_base_path / "imdb", label_type="topic"
      )
  
file_path: flair/tests/models/test_text_classifier.py
imports: import pytest
  import flair.datasets
  from flair.data import Sentence
  from flair.embeddings import DocumentRNNEmbeddings, FlairEmbeddings, WordEmbeddings
  from flair.models import TextClassifier
  from flair.samplers import ImbalancedClassificationDatasetSampler
  from flair.trainers import ModelTrainer
  from tests.model_test_utils import BaseModelTest
label_desc: Use image node_id 2 for calling the TestTextClassifier obj's underlying member method code with example usage: obj.corpus(tasks_base_path) and returns: flair