code: def get_default_build_platform_toolchain(source_root_dir):
      if platform.system().lower() == "windows":
          return os.path.abspath(
              os.path.join(
                  source_root_dir,
                  "build",
                  "toolchains",
                  "default.toolchain",
              )
          )
      else:
          return os.path.abspath(
              os.path.join(
                  source_root_dir,
                  "build",
                  "toolchains",
                  "clang.toolchain",
              )
          )
  
imports: import argparse
  import copy
  import logging
  import os
  import platform
  import subprocess
  import sys
  import tempfile
  from typing import Dict
label_desc: Use image node_id 14 for calling a global function with example usage: get_default_build_platform_toolchain(source_root_dir) and returns: os, os