def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
def child_nodes: () -> Array[nil | Node]
Raise an error because the given node is not supported.