public function formatByBitcoin($fractionDigits = 2, Currencies $currencies = null)
    {
        $formatter = new BitcoinMoneyFormatter($fractionDigits, $currencies ?: new BitcoinCurrencies());

        return $this->formatByFormatter($formatter);
    }
public function formatByBitcoin($fractionDigits = 2, Currencies $currencies = null)
    {
        $formatter = new BitcoinMoneyFormatter($fractionDigits, $currencies ?: new BitcoinCurrencies());

        return $this->formatByFormatter($formatter);
    }
public function formatByBitcoin ( $ fractionDigits = 2 , Currencies $ currencies = null ) { $ formatter = new BitcoinMoneyFormatter ( $ fractionDigits , $ currencies ? : new BitcoinCurrencies ( ) ) ; return $ this -> formatByFormatter ( $ formatter ) ; }
Format by bitcoin.

@param int               $fractionDigits
@param \Money\Currencies $currencies

@return string
Format by bitcoin .