Calls the given method (if present) with the arguments given in args on this node and recursively on all its children. If the parent_first argument is true then the method will be called on the current node first, then on all children. If it is false then the children will be called first.
Calls the given method (if present) with the arguments given in args on this node and recursively on all its children. If the parent_first argument is true then the method will be called on the current node first, then on all children. If it is false then the children will be called first.