private IEnumerable <Expression> CreateNewBuildupSequence(DynamicBuildPlanGenerationContext buildContext, SelectedConstructor selectedConstructor, string signature)
        {
            var parameterExpressions = BuildConstructionParameterExpressions(buildContext, selectedConstructor, signature);
            var newItemExpression    = Expression.Variable(selectedConstructor.Constructor.DeclaringType, "newItem");

            yield return(Expression.Call(null,
                                         SetCurrentOperationToInvokingConstructorMethod,
                                         Expression.Constant(signature),
                                         buildContext.ContextParameter));

            yield return(Expression.Assign(
                             buildContext.GetExistingObjectExpression(),
                             Expression.Convert(
                                 Expression.New(selectedConstructor.Constructor, parameterExpressions),
                                 typeof(object))));

            yield return(buildContext.GetClearCurrentOperationExpression());
        }