Required. Only updates the device_registry fields
indicated by this mask. The field mask must not be empty, and
it must not contain fields that are immutable or only set by
the server. Mutable top-level fields:
event_notification_config, http_config,
mqtt_config, and state_notification_config.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-02 UTC."],[],[]]
