OpenNos.GameObject.ClientSession.GenerateHandlerReferences C# (CSharp) Method

        private void GenerateHandlerReferences(Type type, bool isWorldServer)
        {
            IEnumerable<Type> handlerTypes = !isWorldServer ? type.Assembly.GetTypes().Where(t => t.Name.Equals("LoginPacketHandler")) // shitty but it works
                                                            : type.Assembly.GetTypes().Where(p => !p.IsInterface && type.GetInterfaces().FirstOrDefault().IsAssignableFrom(p));

            // iterate thru each type in the given assembly
            foreach (Type handlerType in handlerTypes)
            {
                IPacketHandler handler = (IPacketHandler)Activator.CreateInstance(handlerType, new object[] { this });

                // include PacketDefinition
                foreach (MethodInfo methodInfo in handlerType.GetMethods().Where(x => x.GetCustomAttributes(false).OfType<PacketAttribute>().Any() || x.GetParameters().FirstOrDefault()?.ParameterType?.BaseType == typeof(PacketDefinition)))
                {
                    PacketAttribute packetAttribute = methodInfo.GetCustomAttributes(false).OfType<PacketAttribute>().FirstOrDefault();

                    // assume PacketDefinition based handler method
                    if (packetAttribute == null)
                    {
                        HandlerMethodReference methodReference = new HandlerMethodReference(DelegateBuilder.BuildDelegate<Action<object, object>>(methodInfo), handler, methodInfo.GetParameters().FirstOrDefault()?.ParameterType);
                        HandlerMethods.Add(methodReference.Identification, methodReference);
                    }
                    else
                    {
                        // assume string based handler method
                        HandlerMethodReference methodReference = new HandlerMethodReference(DelegateBuilder.BuildDelegate<Action<object, object>>(methodInfo), handler, packetAttribute);
                        HandlerMethods.Add(methodReference.Identification, methodReference);
                    }
                }
            }
        }