When true, write the subscription name, message_id, publish_time,
attributes, and ordering_key as additional fields in the output. The
subscription name, message_id, and publish_time fields are put in their
own fields while all other message properties other than data (for
example, an ordering_key, if present) are added as entries in the
attributes map.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-16 UTC."],[],[]]