The link to open when the user clicks on the notification. For all URL values, HTTPS is
required. For example, by setting this value to your app's URL, a notification click event
will put your app in focus for the user.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2022-07-27 UTC."],[],[]]
Options for features provided by the FCM SDK for Web. See WebpushFcmOptions.