How to use NullCoalescingOperatorExpression class of Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST package

...155			{ VirtualCall = true };156			emitter.CodeBuilder.AddExpression(157				new IfNullExpression(methodInterceptorsField,158				                     new AssignStatement(methodInterceptorsField,159				                                         new NullCoalescingOperatorExpression(selectInterceptors, emptyInterceptors))));160			return methodInterceptorsField.ToExpression();161		}162		private void EmitLoadGenricMethodArguments(MethodEmitter methodEmitter, MethodInfo method, Reference invocationLocal)163		{164			var genericParameters = method.GetGenericArguments().FindAll(t => t.GetTypeInfo().IsGenericParameter);165			var genericParamsArrayLocal = methodEmitter.CodeBuilder.DeclareLocal(typeof(Type[]));166			methodEmitter.CodeBuilder.AddStatement(167				new AssignStatement(genericParamsArrayLocal, new NewArrayExpression(genericParameters.Length, typeof(Type))));168			for (var i = 0; i < genericParameters.Length; ++i)169			{170				methodEmitter.CodeBuilder.AddStatement(171					new AssignArrayStatement(genericParamsArrayLocal, i, new TypeTokenExpression(genericParameters[i])));172			}173			methodEmitter.CodeBuilder.AddExpression(...

...90			if (!canChangeTarget)91			{92				return (c, m) => fields[m.DeclaringType].ToExpression();93			}94			return (c, m) => new NullCoalescingOperatorExpression(95			                 	new AsTypeReference(c.GetField("__target"), m.DeclaringType).ToExpression(),96			                 	fields[m.DeclaringType].ToExpression());97		}98		private FieldReference BuildTargetField(ClassEmitter @class, Type type)99		{100			var name = "__mixin_" + type.FullName.Replace(".", "_");101			return @class.CreateField(namingScope.GetUniqueName(name), type);102		}103		private Type GetInvocationType(MetaMethod method, ClassEmitter emitter, ProxyGenerationOptions options)104		{105			var scope = emitter.ModuleScope;106			Type[] invocationInterfaces;107			if (canChangeTarget)108			{...

...14namespace Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST15{16	using System;17	using System.Reflection.Emit;18	internal class NullCoalescingOperatorExpression : Expression19	{20		private readonly Expression @default;21		private readonly Expression expression;22		public NullCoalescingOperatorExpression(Expression expression, Expression @default)23		{24			if (expression == null)25			{26				throw new ArgumentNullException("expression");27			}28			if (@default == null)29			{30				throw new ArgumentNullException("default");31			}32			this.expression = expression;33			this.@default = @default;34		}35		public override void Emit(IMemberEmitter member, ILGenerator gen)36		{...

1using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;2using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;3using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;4using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;5using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;6using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;7using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;8using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;9using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;10using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;

1using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;2using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters;3using Telerik.JustMock.Core.Castle.DynamicProxy;4using Telerik.JustMock;5using Telerik.JustMock.Core;6using Telerik.JustMock.Core.Castle.Core;7using Telerik.JustMock.Core.Castle.Core.Internal;8using Telerik.JustMock.Core.Castle.Core.Logging;9using Telerik.JustMock.Core.Castle.Core.Logging.NullLoggerFactory;10using Telerik.JustMock.Core.Castle.Core.Resource;11using Telerik.JustMock.Core.Castle.Core.Resource.ResourceManager;12using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;13using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters;14using Telerik.JustMock.Core.Castle.DynamicProxy;