code: def mock_data_frame():
      return Mock(DataFrame, filter=Mock())
  
imports: from __future__ import absolute_import
  import pytest
  import test_data_helpers
  from mock import Mock, patch, call
  from pyspark.sql import SparkSession, DataFrame
  from sagemaker.feature_store.feature_processor._data_source import CSVDataSource, FeatureGroupDataSource, ParquetDataSource, IcebergTableDataSource
  from sagemaker.feature_store.feature_processor._input_loader import SparkDataFrameInputLoader
  from sagemaker.feature_store.feature_processor._spark_factory import SparkSessionFactory
  from sagemaker.feature_store.feature_processor._env import EnvironmentHelper
  from sagemaker.session import Session
label_desc: Use image node_id 5 for calling a global function with example usage: mock_data_frame() and returns: Mock