https://learn.microsoft.com/en-us/dotnet/api/documentformat.openxml.schemaattrattribute?view=openxml-2.20.0&viewFallbackFrom=openxml-3.0.1
SchemaAttrAttribute Class (DocumentFormat.OpenXml) | Microsoft Learn
Defines the attribute which is used to decorate a property for its corresponding attribute information.
classopenxmlmicrosoftlearn