The value must be a UTF-8 encoded string with a length limit of 128
characters, and match the pattern: [a-zA-Z][a-zA-Z0-9_]*. For example,
id0LikeThis or ID_1_LIKE_THIS. Otherwise, an INVALID_ARGUMENT error is
returned.
Corresponds to Google Merchant Center property
promotion_id.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-21 UTC."],[[["The latest version of the `Google.Cloud.Retail.V2.Promotion` class is 2.12.0, and previous versions are also available, ranging back to 1.0.0."],["The `Promotion` class is part of the `Google.Cloud.Retail.V2` namespace, within the `Google.Cloud.Retail.V2.dll` assembly."],["The `Promotion` class implements multiple interfaces including `IMessage`, `IEquatable`, `IDeepCloneable`, and `IBufferMessage`, and inherits members from the `object` class."],["The `Promotion` class can be constructed either as a new instance with the `Promotion()` constructor or as a copy using the `Promotion(Promotion other)` constructor."],["The `Promotion` class contains a `PromotionId` property of type string, which represents the ID of the promotion, and has constraints regarding length and character composition."]]],[]]
