Common
```kotlin
@JvmDefaultWithCompatibility
public interface Segment
```
[Segment](/jetpack-compose/androidx.compose.animation/animation-core/interfaces/Transition.Segment) holds `initialState` and `targetState`, which are the beginning and end of a
transition. These states will be used to obtain the animation spec that will be used for this
transition from the child animations.
## Functions
isTransitioningTo
```kotlin
public infix fun S.isTransitioningTo(targetState: S): Boolean
```
Returns whether the provided state matches the `initialState` && the provided
`targetState` matches [Segment.targetState](/jetpack-compose/androidx.compose.animation/animation-core/interfaces/Transition.Segment).