System.Xml.Serialization.XmlSerializationWriter.CreateUnknownTypeException C# (CSharp) Method

        protected Exception CreateUnknownTypeException(Type type)
        {
            if (typeof(IXmlSerializable).IsAssignableFrom(type)) return new InvalidOperationException(SR.Format(SR.XmlInvalidSerializable, type.FullName));
            TypeDesc typeDesc = new TypeScope().GetTypeDesc(type);
            if (!typeDesc.IsStructLike) return new InvalidOperationException(SR.Format(SR.XmlInvalidUseOfType, type.FullName));
            return new InvalidOperationException(SR.Format(SR.XmlUnxpectedType, type.FullName));
        }