Function
referentialEqualityPolicy
Common
```kotlin
public fun referentialEqualityPolicy(): SnapshotMutationPolicy
```
A policy to treat values of a `MutableState` as equivalent if they are referentially (===) equal.
Setting `MutableState.value` to its current referentially (===) equal value is not considered a
change. When applying a `MutableSnapshot`, if the snapshot changes the value to the equivalent
value the parent snapshot has is not considered a conflict.