Function
findCompositionInstance
Common
```kotlin
public fun CompositionData.findCompositionInstance(): CompositionInstance?
```
Find the `CompositionInstance` associated with the root `CompositionData`. This is only valid for
instances of `CompositionData` that are recorded in a `LocalInspectionTables` table directly.
Even though `CompositionGroup`s implement the `CompositionData` interface, only the root
`CompositionData` has an associated `CompositionInstance`. All `CompositionGroup` instances will
return `null`.