File: FrameworkFork\System.ServiceModel\System\ServiceModel\Channels\CompositeDuplexBindingElementImporter.cs
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Project: src\src\dotnet-svcutil\lib\src\dotnet-svcutil-lib.csproj (dotnet-svcutil-lib)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
namespace System.ServiceModel.Channels
{
    using Microsoft.Xml;
    using System.ServiceModel.Description;
    using System.Collections;
 
    public class CompositeDuplexBindingElementImporter : IPolicyImportExtension
    {
        public CompositeDuplexBindingElementImporter()
        {
        }
 
        void IPolicyImportExtension.ImportPolicy(MetadataImporter importer, PolicyConversionContext context)
        {
            if (importer == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("importer");
            }
 
            if (context == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
            }
 
            XmlElement compositeDuplexAssertion = PolicyConversionContext.FindAssertion(context.GetBindingAssertions(),
                TransportPolicyConstants.CompositeDuplex, TransportPolicyConstants.CompositeDuplexNamespace, true);
 
            if (compositeDuplexAssertion != null
                || WsdlImporter.WSAddressingHelper.DetermineSupportedAddressingMode(importer, context) == SupportedAddressingMode.NonAnonymous)
            {
                context.BindingElements.Add(new CompositeDuplexBindingElement());
            }
        }
    }
}