@Override
    public void info(String message) {
        loggerA.info(message);
        loggerB.info(message);
    }
Constructor.
<p>
Loggers are logged to in the order provided to this constructor (i.e. loggerA then loggerB).

@param loggerA first logger
@param loggerB second logger
common/logging/core/src/main/java/io/apiman/common/logging/impl/DoubleLogger.java