1

src/main/java/eu/raspberrymods/fishlib/FishLib.java

@@ -16,7 +16,9 @@ public void onInitialize() {
 		// This code runs as soon as Minecraft is in a mod-load-ready state.
 		// However, some things (like resources) may still be uninitialized.
 		// Proceed with mild caution.
-
+        public class Obsidian implements ToolMaterial {
+			// Your IDE should override the interface's methods for you, or at least shout at you to do so.
+		}
 		LOGGER.warn("This is a pretty fishy library mod!");
 	}
 }