whenExpression
fun whenExpression(whenKeyword: Node.Keyword.When = Node.Keyword.When(), subject: Node.Expression.WhenExpression.WhenSubject? = null, branches: List<Node.Expression.WhenExpression.WhenBranch> = listOf(), supplement: NodeSupplement = NodeSupplement()): Node.Expression.WhenExpression
Creates a new Node.Expression.WhenExpression instance.