```fun sendContacts(contacts: Set<Contact>) ...

# announcements

[fabricio]

fun sendContacts(contacts: Set<Contact>) {
    val contactsIds = contacts.map(Contact::getId).toSet()
    if (contactsIds.isEmpty()) {
        return
    }
    send(contactsIds)
}

is there any way to write that isEmpty() / return in a single line in kotlin? or in a simpler/prettier way that doesn't require this traditional structure