code: def setUp(self):
      self.field_definition = [
          {"field": "name", "type": "String"},
          {"field": "age", "type": "String"},
      ]
  
file_path: dedupe/tests/test_api.py
imports: import itertools
  import unittest
  import warnings
  from collections import OrderedDict
  import dedupe.api
label_desc: Use image node_id 1 for calling the ActiveMatch obj's underlying member method code with example usage: obj.setUp() without return types