removed = getFormerContributions().removeByKey(new Long(contributorId));
removed = getFormerContributions().removeByKey(contributorId);
	synchronized void removeContribution(long contributorId) {		boolean removed = newContributions.removeByKey(new Long(contributorId));		if (removed == false) {			removed = getFormerContributions().removeByKey(new Long(contributorId));			if (removed)				formerContributions = getFormerContributions(); //This forces the removed namespace to stay around, so we do not forget about removed namespaces		}		if (removed) {			isDirty = true;			return;		}	}