[System.Xml.Serialization.XmlElement("annotation", typeof(System.Xml.Schema.XmlSchemaAnnotation))]
[System.Xml.Serialization.XmlElement("simpleType", typeof(System.Xml.Schema.XmlSchemaSimpleType))]
[System.Xml.Serialization.XmlElement("complexType", typeof(System.Xml.Schema.XmlSchemaComplexType))]
[System.Xml.Serialization.XmlElement("group", typeof(System.Xml.Schema.XmlSchemaGroup))]
[System.Xml.Serialization.XmlElement("attributeGroup", typeof(System.Xml.Schema.XmlSchemaAttributeGroup))]
public XmlSchemaObjectCollection Items { get; }