in src/main/java/com/twitter/nodes/NodeDotGraphGenerator.java [110:121]
public String getDOTString() {
String label;
String returnType = getReturnTypeForDisplay(node);
if (returnType != null && !"Resp".equals(returnType)) {
label = String.format("%s\\n<%s>", nodeName, returnType);
} else {
label = nodeName;
}
boolean subgraphExit = node.getEnclosingSubgraph() != null;
String renderingFormat = type.getRenderingStyle() + (subgraphExit ? ",fontcolor=blue" : "");
return String.format("%s [label=\"%s\" %s];", keyName, label, renderingFormat);
}