code: def add_whitelisted_libs():
      policies = None
  
      with open(
          join(
              dirname(abspath(policy.__file__)), "manylinux-policy.json"
          )
      ) as f:
          policies = json.load(f)
  
      for p in policies:
          p["lib_whitelist"].append("libxcb.so.1")
  
      with open(
          join(
              dirname(abspath(policy.__file__)), "manylinux-policy.json"
          ),
          "w",
      ) as f:
          f.write(json.dumps(policies))
  
label_desc: Use image node_id 1 for calling a global function with example usage: add_whitelisted_libs() without return types