code: def setUp(self):
      self.rows = (
          (1, "c", 4, "a"),
          (2, "e", 3, "b"),
          (None, "g", 2, "c"),
      )
  
      self.number_type = Number()
      self.text_type = Text()
  
      self.column_names = ["one", "two", "three", "four"]
      self.column_types = [
          self.number_type,
          self.text_type,
          self.number_type,
          self.text_type,
      ]
  
file_path: agate/tests/test_table/test_normalize.py
imports: from agate import Table
  from agate.data_types import Number, Text
  from agate.testcase import AgateTestCase
  from agate.type_tester import TypeTester
label_desc: Use image node_id 1 for calling the TestNormalize obj's underlying member method code with example usage: obj.setUp() without return types