Fields stamped on every analytics event: the per-load session id (a fresh UUID minted by every load()) and the item URL, so analytics pipelines can key events without inventing their own ids. Absent only on events emitted before the first load.
load()
Optional
Fields stamped on every analytics event: the per-load session id (a fresh UUID minted by every
load()) and the item URL, so analytics pipelines can key events without inventing their own ids. Absent only on events emitted before the first load.