it is done

core/src/mindustry/net/Packet.java

@@ -0,0 +1,24 @@
+package mindustry.net;
+
+import arc.util.pooling.Pool.Poolable;
+
+import java.nio.ByteBuffer;
+
+public interface Packet extends Poolable{
+    default void read(ByteBuffer buffer){
+    }
+
+    default void write(ByteBuffer buffer){
+    }
+
+    default void reset(){
+    }
+
+    default boolean isImportant(){
+        return false;
+    }
+
+    default boolean isUnimportant(){
+        return false;
+    }
+}