code: def processing_input():
      return ProcessingInput(
          source="s3_uri",
          destination="destination",
      )
  
imports: from __future__ import absolute_import
  import pathlib
  import subprocess
  import tempfile
  from io import BytesIO
  from typing import Generator
  from unittest.case import TestCase
  from unittest.mock import MagicMock, Mock, call, mock_open, patch
  import pytest
  from sagemaker.processing import ProcessingInput, ProcessingOutput
  from sagemaker.session_settings import SessionSettings
  from sagemaker.spark.processing import PySparkProcessor, SparkJarProcessor, _SparkProcessorBase, _HistoryServer, FileType, SparkConfigUtils
label_desc: Use image node_id 2 for calling a global function with example usage: processing_input() and returns: ProcessingInput