private String adjustPrefix(String prefix) {
		if (prefix.endsWith("*")) {
			return prefix.substring(0, prefix.length() - 1);
		}
		else {
			return prefix + BusUtils.GROUP_INDEX_DELIMITER;
		}
	}
Implementation of {@link BusCleaner} for the {@code RabbitMessageBus}.

@author Gary Russell
@since 1.2
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/integration/bus/rabbit/RabbitBusCleaner.java