Null check instead of initilizing empty work

MistoxServer/Client/MistoxClient.cs

@@ -6,7 +6,6 @@ using System.Net.Sockets;
 using System.Numerics;
 using System.Threading;
 using System.Threading.Tasks;
-using MessagePack.Formatters;
 using Mistox.ResevedPackets;
 
 namespace Mistox.Client {
@@ -37,14 +36,6 @@ namespace Mistox.Client {
             UserName = userName;
             ConnectionKey = connectionKey;
 
-            onServerConnected += () => {};
-            onUserConnected += (_) => {};
-            onUserJoined += (_) => {};
-            onDataReceived += (_,_) => {};
-            onUserLeft += (_) => {};
-            onUserDisconnected += (_) => {};
-            onServerDisconnected += () => {};
-
             // Create and connect to server on TCP
             Console.WriteLine( "The client is initilized and trying to connect to the server at ip : " + Server.Address );
             try {
@@ -148,7 +139,7 @@ namespace Mistox.Client {
 /////////////////////////////
 
         // When (self) connects to the server
-        public event Action onServerConnected;
+        public event Action? onServerConnected;
         public void InvokeOnServerConnected(){
             Alive = true;
             Task.Run(async () => {
@@ -160,19 +151,19 @@ namespace Mistox.Client {
         }
 
         // When any user connects to the server (self) hasn't seen yet
-        public event Action<mUDPClient> onUserJoined;
+        public event Action<mUDPClient>? onUserJoined;
         public void InvokeOnUserJoined(mUDPClient User){
             onUserJoined?.Invoke(User);
         }
 
         // When user is within range of (self) and network rendering starts
-        public event Action<mUDPClient> onUserConnected;
+        public event Action<mUDPClient>? onUserConnected;
         public void InvokeOnUserConnected(mUDPClient User){
             onUserConnected?.Invoke(User);
         }
 
         // When generic data is received
-        public event Action<mUDPClient?, dynamic> onDataReceived;
+        public event Action<mUDPClient?, dynamic>? onDataReceived;
         public void InvokeOnReceived(dynamic DataPacket, mUDPClient? remote = null){
             switch (DataPacket as object)  {
                 case HeartbeatPacket packet:
@@ -193,19 +184,19 @@ namespace Mistox.Client {
         }
 
         // When user is no longer in range of (self) and network rendering stops
-        public event Action<mUDPClient> onUserDisconnected;
+        public event Action<mUDPClient>? onUserDisconnected;
         public void InvokeOnUserDisconnected(mUDPClient User){
             onUserDisconnected?.Invoke(User);
         }
 
         // When any user disconnects from the server that isn't (self)
-        public event Action<mUDPClient> onUserLeft;
+        public event Action<mUDPClient>? onUserLeft;
         public void InvokeOnUserLeft(mUDPClient User){
             onUserLeft?.Invoke(User);
         }
 
         // When (self) disconnects to the server
-        public event Action onServerDisconnected;
+        public event Action? onServerDisconnected;
         public void InvokeOnServerDisconnected(){
             Alive = false;
             onServerDisconnected?.Invoke();