kotlin.collections.listOfNotNull

fun <T : Any> listOfNotNull(element: T?): List<T>

Returns a new read-only list either of single given element, if it is not null, or empty list it the element is null. The returned list is serializable (JVM).

fun <T : Any> listOfNotNull(vararg elements: T?): List<T>

Returns a new read-only list only of those given elements, that are not null. The returned list is serializable (JVM).