Correction - if the targetObject is a `RequestReplyExchanger`, there will be 1 `fallbackMessageMethods`. Hence we just have to test for ambiguous methods...

		if ((ambiguousFallbackType.get() != null
				 ||	ambiguousFallbackMessageGenericType.get() != null)
				&& ServiceActivator.class.equals(annotationType)) {
			/*
			 * When there are ambiguous fallback methods,
			 * a Service Activator can finally fallback to RequestReplyExchanger.exchange(m).
			 * Ambiguous means > 1 method that takes the same payload type, or > 1 method
			 * that takes a Message with the same generic type.
			 */