pub const NO_PROPS: &[u8];Expand description
What to pass as the properties of a node or an edge that has none.
An edge still needs a document, because the property store is keyed by the
edge slot and a slot with nothing under it would be a slot that later reads
have to guard against. This is the four bytes that document is, so a caller
with nothing to say does not have to run a Builder to say it.