public static <K, V> Consumed<K, V> as(final String processorName) {
        return new Consumed<>(null, null, null, null, processorName);
    }
Create an instance of {@link Consumed} with provided processor name.

@param processorName
       the processor name to be used. If {@code null} a default processor name will be generated

@param <K> key type
@param <V> value type

@return a new instance of {@link Consumed}
streams/src/main/java/org/apache/kafka/streams/kstream/Consumed.java