code: def to_unsigned(type_str) -> str:
      if type_str == "int32":
          return "uint32"
      elif type_str == "int64":
          return "uint64"
      else:
          return type_str
  
imports: import argparse
  import subprocess
  from abc import ABC, abstractmethod
  from typing import Dict, List, Optional
label_desc: Use image node_id 2 for calling a global function with example usage: to_unsigned(type_str) and returns: str, str, type_str