The fields to merge. An empty array is equivalent to using MergeAll.
Must not be null or contain any empty or null elements. Each field is treated as a dot-separated list of segments.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThis document provides reference documentation for the \u003ccode\u003eSetOptions\u003c/code\u003e class within the Google Cloud Firestore API, specifically version 3.6.0, with links to documentation for other versions.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eSetOptions\u003c/code\u003e class is an immutable class that defines options for set operations within Firestore, determining how data is merged or overwritten.\u003c/p\u003e\n"],["\u003cp\u003eKey properties of \u003ccode\u003eSetOptions\u003c/code\u003e include \u003ccode\u003eFieldMask\u003c/code\u003e, which specifies which fields to merge, \u003ccode\u003eMerge\u003c/code\u003e, which indicates whether to merge or overwrite, and \u003ccode\u003eMergeAll\u003c/code\u003e and \u003ccode\u003eOverwrite\u003c/code\u003e, which provide predefined options for merging all or overwriting data, respectively.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMergeFields\u003c/code\u003e methods allow for merging specific fields, either by specifying \u003ccode\u003eFieldPath\u003c/code\u003e or string-based field names.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of this class is 3.10.0, with older versions going as far back as version 2.3.1.\u003c/p\u003e\n"]]],[],null,[]]
