Searches through the direct children of @node for a matching child. @find_func should return %TRUE if the child matches, otherwise %FALSE.
A #DzlTreeNode
A callback to locate the child
user data for @find_func
A #DzlTreeNode or %NULL.
See Implementation
Searches through the direct children of @node for a matching child. @find_func should return %TRUE if the child matches, otherwise %FALSE.