code: def multiclass_train_test_sentence(self):
      return Sentence("apple tv")
  
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 3 for calling the TestTextClassifier obj's underlying member method code with example usage: obj.multiclass_train_test_sentence() and returns: Sentence