When you say "it is unique over a system instances lifetime"? Do you mean an erlang node running on 1 machine? So every node has its own generation. Every gene

When you say "it is unique over a system instances lifetime"? Do you mean an erlang node running on 1 machine? So every node has its own generation. Every generation starts at 1, and every time it restarts, you read the current generation and increment it? The `unique_integer` must be strictly monotonic when given the monotonic option right? When there's no monotonic, that just means the subsequent id can be higher or lower, but not the same. Given the triple {ID, Generation, Node}, is the Node id unique & different across restarts or the same?