There is no function that only returns the last node, nor the first

[autotel]

there are functions that returns node, that are useful for programmatic iteration (sometimes you need to follow a different order than the one of the iterator function). I tried to start from the last node and end in the first node and there was no other way than having a variable that stores the last pushed node. I think it'd make sense to have a function that gets the last node, so I could iterate from the back to the beginning.