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# addSubtree(_:weight:)

Adds a node tree that’s one of the random-selection options.

```
func addSubtree(_ subtree: PHASESoundEventNodeDefinition, weight: NSNumber)
```

## Parameters

`subtree`

The child node, which itself can contain a hierarchical tree of descendent nodes.

`weight`

A number that implements favoritism in the random selection.

---

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