code: def GetKeyByPath(self, key_path):
      
      key_path_upper = key_path.upper()
      if key_path_upper.startswith(self._key_path_prefix_upper):
        relative_key_path = key_path[self._key_path_prefix_length:]
      elif key_path.startswith(definitions.KEY_PATH_SEPARATOR):
        relative_key_path = key_path
        key_path = ''.join([self._key_path_prefix, key_path])
      else:
        return None
  
      path_segments = key_paths.SplitKeyPath(relative_key_path)
      registry_key = self._root_key
      if not registry_key:
        return None
  
      for path_segment in path_segments:
        registry_key = registry_key.GetSubkeyByName(path_segment)
        if not registry_key:
          return None
  
      return registry_key
docs: Retrieves the key for a specific path.
  
      Args:
        key_path (str): Windows Registry key path.
  
      Returns:
        WinRegistryKey: Windows Registry key or None if not available.