code: def register_from_C(config, skip_register=True):
      from .utils import set_log_with_config  # pylint: disable=C0415
  
      if C.registered and skip_register:
          return
  
      C.set_conf_from_C(config)
      if C.logging_config:
          set_log_with_config(C.logging_config)
      C.register()
  
imports: from __future__ import annotations
  import os
  import re
  import copy
  import logging
  import platform
  import multiprocessing
  from pathlib import Path
  from typing import Callable, Optional, Union
  from typing import TYPE_CHECKING
  from qlib.constant import REG_CN, REG_US, REG_TW
label_desc: Use image node_id 15 for calling the Config obj's underlying member method code with example usage: obj.register_from_C(config, skip_register) without return types