code: def install_node_packages(self):
      os.system(f"{self.sudo_cmd} ./ts_scripts/mac_npm_deps")
  
imports: import argparse
  import os
  import platform
  import sys
  from print_env_info import run_and_parse_first_match
  from ts_scripts.utils import check_python_version
label_desc: Use image node_id 4 for calling the Darwin obj's underlying member method code with example usage: obj.install_node_packages() without return types