code: def setUp(self):
      # Mock BigQuery result schema.
      self._schema = [
          bigquery.SchemaField("i", "INTEGER", mode="REQUIRED"),
          bigquery.SchemaField("i2", "INTEGER", mode="REPEATED"),
          bigquery.SchemaField("b", "BOOLEAN", mode="REQUIRED"),
          bigquery.SchemaField("f", "FLOAT", mode="REQUIRED"),
          bigquery.SchemaField("f2", "FLOAT", mode="REPEATED"),
          bigquery.SchemaField("s", "STRING", mode="REQUIRED"),
          bigquery.SchemaField("s2", "STRING", mode="REPEATED"),
      ]
      super().setUp()
  
imports: import json
  import os
  import random
  from unittest import mock
  import apache_beam
  from apache_beam.testing import util
  from google.cloud import bigquery
  import tensorflow
  from tfx.dsl.components.base import base_beam_executor
  from tfx.dsl.io import fileio
  from tfx.extensions.google_cloud_big_query import utils
  from tfx.extensions.google_cloud_big_query.example_gen import executor
  from tfx.proto import example_gen_pb2
  from tfx.types import artifact_utils
  from tfx.types import standard_artifacts
  from tfx.utils import proto_utils
label_desc: Use image node_id 1 for calling the ExecutorTest obj's underlying member method code with example usage: obj.setUp() without return types