public String getLabelName() {
		return (label != null) ? label.getLabelName() : moduleName;
	}
Return the label for this module, that is:
<ul>
<li>an explicit label if provided</li>
<li>the module name if no label was provided</li>
</ul>
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/stream/dsl/ModuleNode.java