Method marketOrNull

java/lib/src/main/java/io/github/ccxt/Exchange.java:9178–9186

(Object... optionalArgs)

    }

    public Object marketOrNull(Object... optionalArgs)
    {
        Object symbol = Helpers.getArg(optionalArgs, 0, null);
        if (Helpers.isTrue(Helpers.isEqual(symbol, null)))
        {
            return null;
        }
        return this.market(symbol);
    }

    public Object checkRequiredCredentials(Object... optionalArgs)
    {