def to_b58check(self, testnet=False):
        """ Generates a Base58Check encoding of this private key.

        Returns:
            str: A Base58Check encoded string representing the key.
        """
        version = self.TESTNET_VERSION if testnet else self.MAINNET_VERSION
        return base58.b58encode_check(bytes([version]) + bytes(self))
Generates a Base58Check encoding of this private key.

        Returns:
            str: A Base58Check encoded string representing the key.