ProgramElementNode target, ProgramElementNode advice, Relation relation)
IProgramElement target, IProgramElement advice, IRelationship relation)
	private static void createAppropriateLinks(		ProgramElementNode target,		ProgramElementNode advice,		Relation relation)	{		if (target == null || advice == null) return;						addLink(target, new LinkNode(advice),  relation, true);		addLink(advice, new LinkNode(target),  relation, false);		//		System.out.println(">> added target: " + target.getProgramElementKind() + ", advice: " + advice);//		System.out.println(">> target: " + target + ", advice: " + target.getSourceLocation());	}