## WebExtensionProperty class Specifies a set of web extension custom properties. To learn more, visit the [Work with Office Add-ins](https://docs.aspose.com/words/net/work-with-office-add-ins/) do......com/words/net/work-with-office-add-ins/) documentation article. ```csharp public...extension to a document. ```csharp Document doc = new Document(); // Create...