code: def __init__(self, message: str = "") -> None:
      if not message:
          message = "Currently each domain node could have only one oblv public/private key pair"
      super().__init__(message)
  
label_desc: Use image node_id 1 to create a new OblvKeyAlreadyExistsError object from inherited base classes: Exception with example: obj = OblvKeyAlreadyExistsError(message)