namespace System.Xml
{
    [Obsolete("XmlValidatingReader has been deprecated. Use XmlReader created by XmlReader.Create() method using appropriate XmlReaderSettings instead.")]
    public class XmlValidatingReader : XmlReader, IXmlLineInfo, IXmlNamespaceResolver
    {
        public override int ReadContentAsBase64(byte[]! buffer, int index, int count);
    }
}