XmlImplementation.cs

namespace System.Xml
{
    public class XmlImplementation
    {
        private XmlNameTable nameTable;

        internal XmlNameTable NameTable => nameTable;

        public XmlImplementation()
            : this(new NameTable())
        {
        }

        public XmlImplementation(XmlNameTable nt)
        {
            nameTable = nt;
        }

        public bool HasFeature(string strFeature, string strVersion)
        {
            if (string.Compare("XML", strFeature, StringComparison.OrdinalIgnoreCase) == 0 && (strVersion == null || strVersion == "1.0" || strVersion == "2.0"))
            {
                return true;
            }
            return false;
        }

        public virtual XmlDocument CreateDocument()
        {
            return new XmlDocument(this);
        }
    }
}