operation pathIsValidOutput_V2(flow, target){
	flow.name.println();
	if(flow.type.instanceClassName == "WFP.OutputArrow"){
		if(flow.process.inputArrow.isEmpty()){
			"Process is beginning of WF+".println();
		}
		else{
			if(flow.process.inputArrow.size>1) flow.process.inputArrow.second().println();
			for(f in flow.process.inputArrow){
				"Recursive argument".println();
				return pathIsValidOutput_V2(f,target);
			}
		}
	}
	else if(flow.type.instanceClassName == "WFP.InputArrow"){
		for(f in flow.data.outputArrow){
			"Check if output data: ".print();
			f.data.println();
			"Matches with: ".print();
			target.println();
			if(f.data==target){
				"There is a match".println();
				return false;
			}
			else{
				"Recursive argument".println();
				return pathIsValidOutput_V2(f,target);
			}
		}
	}
	return true;
}