code: def setUp(self):
      self.estimator = MockEstimator()
      self.data = MockDataset()
  
file_path: spark/python/pyspark/ml/tests/test_base.py
imports: import unittest
  from pyspark.sql.types import DoubleType, IntegerType
  from pyspark.testing.mlutils import MockDataset, MockEstimator, MockUnaryTransformer, MockTransformer, SparkSessionTestCase
label_desc: Use image node_id 1 for calling the EstimatorTest obj's underlying member method code with example usage: obj.setUp() without return types