def GetKeyByPath(self, key_path):
    """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.
    """
    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
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.