[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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\u003eThe \u003ccode\u003ePrecondition\u003c/code\u003e class, found in the \u003ccode\u003eGoogle.Cloud.Firestore\u003c/code\u003e namespace, is an immutable class used to define conditions for update operations.\u003c/p\u003e\n"],["\u003cp\u003eIt offers properties to check if a document \u003ccode\u003eExists\u003c/code\u003e or if it was \u003ccode\u003eLastUpdateTime\u003c/code\u003e updated at a specific time, which are mutually exclusive.\u003c/p\u003e\n"],["\u003cp\u003eStatic properties \u003ccode\u003eMustExist\u003c/code\u003e and \u003ccode\u003eNone\u003c/code\u003e offer common preconditions: ensuring a document exists, or having no preconditions at all, respectively.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eLastUpdated(Timestamp)\u003c/code\u003e method is available to verify if a document was last updated at a specified timestamp.\u003c/p\u003e\n"],["\u003cp\u003eIt covers documentation for different version of this class, starting from version 2.3.1 to the latest 3.10.0.\u003c/p\u003e\n"]]],[],null,[]]
