code: def setUp(self):
      metainfo = "tests/data/kie_toy_dataset/wildreceipt/class_list.txt"
      self.dataset = WildReceiptDataset(
          data_prefix=dict(img_path="data/"),
          ann_file="tests/data/kie_toy_dataset/wildreceipt/data.txt",
          metainfo=metainfo,
          pipeline=[],
          serialize_data=False,
          lazy_init=False,
      )
  
imports: import unittest
  from mmocr.datasets import WildReceiptDataset
label_desc: Use image node_id 1 for calling the TestWildReceiptDataset obj's underlying member method code with example usage: obj.setUp() without return types