code: def get_or_create(session_uuid: str):
      process_key = ProcessIndex.get(session_uuid)
  
      if not process_key:
          p = ProcessModel()
          p.save()
          ProcessIndex.set(session_uuid, p.key)
  
          pp = ProcessPreferencesModel()
          pp.save()
          ProcessPreferencesIndex.set(session_uuid, pp.key)
  
          return ProcessAnalysis(p)
  
      return ProcessAnalysis(process_key.load())
  
imports: from typing import Dict, Set, Any
  from fastapi import Request
  from fastapi.responses import JSONResponse
  from labml_db import Model, Index
  from labml_db.serializer.pickle import PickleSerializer
  from labml_app.logger import logger
  from labml_app.enums import COMPUTEREnums
  from ..analysis import Analysis
  from ..series import SeriesModel, Series
  from ..series_collection import SeriesCollection
  from ..preferences import Preferences
label_desc: Use image node_id 7 for calling the ProcessAnalysis obj's underlying member method code with example usage: obj.get_or_create(session_uuid) and returns: ProcessAnalysis, ProcessAnalysis