To better understand this, let's include a label where the execution starts, and also on each of the places were the execution can be resumed:

suspend fun getUserSummary(id: Int): UserSummary {
    // label 0 -> first execution
    logger.log("fetching summary of $id")
    val profile = fetchProfile(id)
    
    // label 1 -> resuming
    val age = calculateAge(profile.dateOfBirth)
    val terms = validateTerms(profile.country, age)
    
    // label 2 -> resuming
    return UserSummary(profile, age, terms)
}

Now, let's pretend that we can somehow receive the label that indicates which part of the code to execute. Then, we could write a when statement to separate the code to be executed:

when(label) {
    0 -> { // Label 0 -> first execution
        logger.log("fetching summary of $id")
        fetchProfile(id)
        return
    }
    1 -> { // label 1 -> resuming
        calculateAge(profile.dateOfBirth)
        validateTerms(profile.country, age)
        return
    }
    2 -> // label 2 -> resuming and terminating
        UserSummary(profile, age, terms)
}