transitionSpec
fun transitionSpec(transitionSpec: AnimatedContentTransitionScope<Scene<*>>.() -> ContentTransform?): Map<String, Any>
Function to be called on the NavEntry.metadata or Scene.metadata to notify the NavDisplay of how the content should be animated using the provided ContentTransform.
IMPORTANT NavDisplay only looks at the Scene.metadata to determine the transitionSpec, it is the responsibility of the Scene.metadata to decide which transitionSpec to return, whether that be from the NavEntry.metadata or something custom.
Parameters
transitionSpec
the ContentTransform to be used when adding to the backstack. If this is null, the transition will fallback to the transition set on the NavDisplay