> if all nodes don't have this we also don't have the API no?

If all nodes don't have this, it isn't an issue because this won't even show up at all.

The -1 is so this works:

```
nodes: {
 node1-v1.1: {
   breaker: {
     tripped: -1,
   }
  },
  node2-v1.2: {
   breaker: {
     tripped: 0,
   }
  },
  node3-v1.2: {
   breaker: {
     tripped: 3,
   }
  }
}
```

Which means, `node1-v1.1` doesn't support this metric (it's version 1.1), `node2-v1.2` hasn't been tripped at all, and `node3-v1.2` has been tripped 3 times.

If we make this a 0, there's no way to tell if the breaker hasn't actually been tripped, or if the metric just isn't supported on the node.