code: def test_dump(self):
      # test dump
      self.assertEqual(
          {
              "x": ["That", "is", "a", "good", "survey"],
              "y": ["DT", "VBZ", "DT", "JJ", "NN"],
              "sample_id": None,
          },
          pos_sample.dump(),
      )
  
file_path: textflint/test/input/component/sample/test_pos_sample.py
imports: import unittest
  from textflint.input.component.sample.pos_sample import *
label_desc: Use image node_id 9 for calling the TestPOSSample obj's underlying member method code with example usage: obj.test_dump() without return types