To retrieve stashed data that has been stored by child mojits, call this function and provide a function, which will be called once the children have been dispatched and all their meta data has been merged.

Stores a keyed value within the meta object of the current mojit execution. You can call this as many times as you like, but if you use the same key, you'll override previous data. Call this within child mojits when you have some data you want to make available for some reason to any parents up your hierarchy.