morhidi commented on PR #268:
URL:
https://github.com/apache/flink-kubernetes-operator/pull/268#issuecomment-1168651437
@gyfora has a good point here. We could probably use this approach:
```
/**
* Creates a new key-value MetricGroup pair. The key group is added to
this groups sub-groups,
* while the value group is added to the key group's sub-groups. This
method returns the value
* group.
*
* <p>The only difference between calling this method and {@code
* group.addGroup(key).addGroup(value)} is that {@link
#getAllVariables()} of the value group
* return an additional {@code "<key>"="value"} pair.
*
* @param key name of the first group
* @param value name of the second group
* @return the second created group
*/
MetricGroup addGroup(String key, String value);
```
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