Store-Reducer.kt

 private fun reduce(action: Action, currentState: State): State {
        val newState = when (action) {
            is CreationAction -> CreationReducer.reduce(action, currentState)
            is UpdateAction -> UpdateReducer.reduce(action, currentState)
            is ReadAction -> ReadReducer.reduce(action, currentState)
            is DeleteAction -> DeleteReducer.reduce(action, currentState)
            is NavigationAction -> NavigationReducer.reduce(action, currentState)
        }
        return newState
 }