@Override
		public boolean equals(Object o) {
			if (this == o) return true;
			if (o == null || getClass() != o.getClass()) return false;

			Id that = (Id) o;

			return this.index == that.index &&
					this.containerId.equals(that.containerId) &&
					this.moduleLabel.equals(that.moduleLabel) &&
					this.moduleType.equals(that.moduleType) &&
					this.unitName.equals(that.unitName);
		}
Return the "fully qualified" id string for the module instance
this metadata object is tracking. The format for this string is
"deploymentUnitName.type.label.index", for example "ticktock.sink.log.1".

@return fully qualified id string
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/module/store/ModuleMetadata.java