code: def setUp(self):
      self.multi_label = True
      self.use_differentiable_head = False
  
imports: import unittest
  import pytest
  from unittest.mock import patch
  from small_text.integrations.pytorch.exceptions import PytorchNotFoundError
label_desc: Use image node_id 1 for calling the TestSetFitClassificationRegressionMultiLabel obj's underlying member method code with example usage: obj.setUp() without return types