mono/mcs/class/referencesource/System.Runtime.Serialization/System/Xml/IXmlDictionary.cs

//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace System.Xml
{
    public interface IXmlDictionary
    {
        bool TryLookup(string value, out XmlDictionaryString result);
        bool TryLookup(int key, out XmlDictionaryString result);
        bool TryLookup(XmlDictionaryString value, out XmlDictionaryString result);
    }
}