I want to have the specific configMap structure

  apiVersion: v1
    kind: ConfigMap
    metadata:
      name: config-map-router1
      labels:
        name: nc1
    data:
      object.properties: |
        address: "1"
        port: ""

How to represent the indentation with

object.properties:

We have to develop little more this part of code

        Map<String, String> data = new HashMap<>();
        data.put("address","");
        //...

        V1ConfigMap configMap= new V1ConfigMap();
        configMap.apiVersion("v1");
        configMap.kind("ConfigMap");
        configMap.metadata(meta);

        configMap.data(data);