code: def my_test_function_2():
      return 2
  
file_path: spark/python/pyspark/sql/tests/streaming/test_streaming_foreach_batch.py
imports: import time
  from pyspark.sql.dataframe import DataFrame
  from pyspark.testing.sqlutils import ReusedSQLTestCase
label_desc: Use image node_id 7 for calling the StreamingTestsForeachBatchMixin obj's underlying member method code with example usage: obj.my_test_function_2() and returns: int