Hmm what I was trying to do specifically was for instance have a node
that contained a list of arrays (NODE_LISTARRAYS). And have another node
that represented the collaborative commands for those arrays
(NODE_ARRAYCOMMANDS) such as push, pop, clear, etc. The second node
(NODE_ARRAYCOMMANDS) clearly needs a reference to the first and is
dependant (to do a pop() we need to specify which array to do the pop()
on). I need to process these commands (NODE_ARRAYCOMMANDS) in order they
were received si...