public static <K, V> Grouped<K, V> as(final String name) {
        return new Grouped<>(name, null, null);
    }
Create a {@link Grouped} instance with the provided name used as part of the repartition topic if required.

@param name
       the name used for a repartition topic if required

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

@return a new {@link Grouped} configured with the name

@see KStream#groupByKey(Grouped)
@see KStream#groupBy(KeyValueMapper, Grouped)
@see KTable#groupBy(KeyValueMapper, Grouped)
streams/src/main/java/org/apache/kafka/streams/kstream/Grouped.java