net.corda.core / kotlin.collections.List

### Extensions for kotlin.collections.List

indexOfOrThrow | `fun <T> List<T>.indexOfOrThrow(item: T): Int` Returns the index of the given item or throws IllegalArgumentException if not found.
randomOrNull | `fun <T> List<T>.randomOrNull(): T?` Returns a random element in the list, or null if empty `fun <T> List<T>.randomOrNull(predicate: (T) -> Boolean): <ERROR CLASS>` Returns a random element in the list matching the given predicate, or null if none found