Retrieves a snapshot of accumulated data from an existing accumulation buffer.
Single-channel or extension-wide data accumulation
If the JWT used to access this endpoint has the
broadcasterrole, the response contains data for that broadcaster's channel; that is, the
channel_idvalue is the broadcaster's Twitch ID.
If the JWT used is extension-level, with the
backendrole, the response contains all data points for the entire extension across all channels.