Update demo contract

templates/Template.CSharp/Contract1.cs

@@ -11,10 +11,33 @@ namespace $safeprojectname$
     [Features(ContractFeatures.HasStorage)]
     public class Contract1 : SmartContract
     {
-        public static bool Main()
+        //TODO: Replace it with your own address.
+        static readonly byte[] Owner = "NiNmXL8FjEUEs1nfX9uHFBNaenxDHJtmuB".ToScriptHash();
+
+        private static bool IsOwner() => Runtime.CheckWitness(Owner);
+
+        // When this contract address is included in the transaction signature,
+        // this method will be triggered as a VerificationTrigger to verify that the signature is correct.
+        // For example, this method needs to be called when withdrawing token from the contract.
+        public static bool Verify() => IsOwner();
+
+        // TODO: Replace it with your methods.
+        public static bool MyMethod()
         {
             Storage.Put("Hello", "World");
             return true;
         }
+
+        public static void Update(byte[] script, string manifest)
+        {
+            if (!IsOwner()) throw new Exception("No authorization.");
+            Contract.Update(script, manifest);
+        }
+
+        public static void Destroy()
+        {
+            if (!IsOwner()) throw new Exception("No authorization.");
+            Contract.Destroy();
+        }
     }
 }

templates/Template.NEP5.CSharp/NEP5.Owner.cs

@@ -19,20 +19,16 @@ public static bool Deploy()
             return true;
         }
 
-        public static bool Update(byte[] script, string manifest)
+        public static void Update(byte[] script, string manifest)
         {
             if (!IsOwner()) throw new Exception("No authorization.");
-            // Check empty
-            if (script.Length == 0 && manifest.Length == 0) return false;
             Contract.Update(script, manifest);
-            return true;
         }
 
-        public static bool Destroy()
+        public static void Destroy()
         {
             if (!IsOwner()) throw new Exception("No authorization.");
             Contract.Destroy();
-            return true;
         }
 
         private static bool IsOwner() => Runtime.CheckWitness(Owner);