def get_block_height(self, is_full: bool = False) -> int or dict:
        """
        This interface is used to get the decimal block height in current network.

        Return:
            the decimal total height of blocks in current network.
        """
        response = self.get_block_count(is_full=True)
        response['result'] -= 1
        if is_full:
            return response
        return response['result']