code: def get_or_create(computer_uuid: str) -> Computer:
      computer_key = ComputerIndex.get(computer_uuid)
  
      if not computer_key:
          computer = Computer(
              computer_uuid=computer_uuid,
          )
          computer.save()
          ComputerIndex.set(computer_uuid, computer.key)
  
          return computer
  
      return computer_key.load()
  
file_path: labml/app/server/labml_app/db/computer.py
imports: import time
  from typing import List, Dict, Set
  from labml_db import Model, Index
label_desc: Use image node_id 1 for calling a global function with example usage: get_or_create(computer_uuid) and returns: computer_key, computer