Question : Labelling Thanos receivers statefulset

[Adaendra]

In the README, it's said at the end :

Finally, deploy StatefulSets of Thanos receivers labeled with controller.receive.thanos.io=thanos-receive-controller.

Does the value of the label controller.receive.thanos.io is thanos-receive-controller because it's hardcoded somewhere ? Or is it because it's the name of the Deployment which is declared before in the documentation ?

Extract of the Deployment declaration

apiVersion: apps/v1
kind: Deployment
metadata:
  name: thanos-receive-controller

Thanks for your help