System.Xml.Serialization.TempAssembly.GetMethodFromType C# (CSharp) Method

        static MethodInfo GetMethodFromType(Type type, string methodName, Assembly assembly) {
            MethodInfo method = type.GetMethod(methodName);
            if (method != null) 
                return method;

            MissingMethodException missingMethod = new MissingMethodException(type.FullName, methodName);
            if (assembly != null) {
                throw new InvalidOperationException(Res.GetString(Res.XmlSerializerExpired, assembly.FullName, assembly.CodeBase), missingMethod); 
            }
            throw missingMethod;
        }