return "subgraph cluster_" + getName() + " {\n label=\"" + self.getIdent() + "\";\n";
return "subgraph cluster_" + getName() + " {\n label=\"" + self.getName() + "\";\n";
    public String getClusterString(SIRStream self) {	return "subgraph cluster_" + getName() + " {\n label=\"" + self.getIdent() + "\";\n";    }