@SuppressWarnings("WeakerAccess")
    public static String producerPrefix(final String producerProp) {
        return PRODUCER_PREFIX + producerProp;
    }
Prefix a property with {@link #PRODUCER_PREFIX}. This is used to isolate {@link ProducerConfig producer configs}
from other client configs.

@param producerProp the producer property to be masked
@return PRODUCER_PREFIX + {@code producerProp}
streams/src/main/java/org/apache/kafka/streams/StreamsConfig.java