code: def setUp(self):
      self.column_names = ("one", "two", "three")
      self.data = ("a", "b", "c")
      self.row = MappedSequence(self.data, self.column_names)
  
imports: import unittest
  from agate.mapped_sequence import MappedSequence
label_desc: Use image node_id 1 for calling the TestMappedSequence obj's underlying member method code with example usage: obj.setUp() without return types