jackalope/jackalope — comment on commit d4d6e8801d49b95cc677e89418fd2f7f7b88bf5d
File: src/Jackalope/ObjectManager.php line 1187
By dbu:

shouldn't delegating be the job of the node? after all, the node knows its children... the node alreday does that for other methods, overwriting the method of item to delegate to the properties.

for the nodes however, we have to do it here, as the node has no idea which descendants of his are cached.