def __init__(self, error_code: int, header_hash: bytes=bytes(Constant.HASH_LENGTH), height: int=0, difficulty: int=0):
    self.error_code = error_code
    self.header_hash = header_hash
    self.height = height
    self.difficulty = difficulty
def __init__(self, error_code: int, header_hash: bytes=bytes(Constant.HASH_LENGTH), height: int=0, difficulty: int=0):
    self.error_code = error_code
    self.header_hash = header_hash
    self.height = height
    self.difficulty = difficulty