https://learn.microsoft.com/ja-jp/dotnet/api/system.xml.schema.xmlschemaobjecttable?view=net-8.0
XmlSchemaObjectTable Class (System.Xml.Schema) | Microsoft Learn
Provides the collections for contained elements in the XmlSchema class (for example, Attributes, AttributeGroups, Elements, and so on).
class systemxml schemamicrosoftlearn