@Override
		public int selectPartition(Object key, int partitionCount) {
			int hashCode = key.hashCode();
			if (hashCode == Integer.MIN_VALUE) {
				hashCode = 0;
			}
			return Math.abs(hashCode);
		}
Default partition strategy; only works on keys with "real" hash codes, such as String. Caller now always applies
modulo so no need to do so here.
spring-xd-messagebus-spi/src/main/java/org/springframework/xd/dirt/integration/bus/MessageBusSupport.java