code: def setUp(self):
      self.model_id = "RWKV/rwkv-4-169m-pile"
      self.tokenizer = AutoTokenizer.from_pretrained(self.model_id)
  
imports: import unittest
  from unittest.util import safe_repr
  from transformers import AutoTokenizer, RwkvConfig, is_torch_available
  from transformers.testing_utils import require_torch, slow, torch_device
  from ...generation.test_utils import GenerationTesterMixin
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor, random_attention_mask
  from ...test_pipeline_mixin import PipelineTesterMixin
label_desc: Use image node_id 1 for calling the RWKVIntegrationTests obj's underlying member method code with example usage: obj.setUp() without return types