private void linkAllReferences(ASTRewrite rewrite, List occurences) {
private void linkAllReferences(ASTRewrite rewrite, List occurences, LinkedProposalModel positionGroups) {
	private void linkAllReferences(ASTRewrite rewrite, List occurences) {		for (Iterator iter= occurences.iterator(); iter.hasNext();) {			ASTNode variableRef= (ASTNode)iter.next();			getPositionGroup(fParameterName).addPosition(rewrite.track(variableRef));		}	}