code: def test_dump(self):
      # test dump
      self.assertEqual(
          {
              "hypothesis": "MR zhang has 10 students",
              "premise": "Mr zhang has 20 students",
              "y": "contradiction",
              "sample_id": None,
          },
          nli_sample.dump(),
      )
  
file_path: textflint/test/input/component/sample/test_nli_sample.py
imports: import unittest
  from textflint.input.component.sample.nli_sample import *
label_desc: Use image node_id 8 for calling the TestNLISample obj's underlying member method code with example usage: obj.test_dump() without return types