Java 8. Java 8. Does whatever Java 8 can.

Default methods, everywhere.
Arrow types, switch on strings.
Lambdas!
Here comes Java 8.

src/main/java/dan200/computercraft/api/lua/ILuaTask.java

@@ -16,6 +16,7 @@ import javax.annotation.Nullable;
  * @see ILuaContext#executeMainThreadTask(ILuaTask)
  * @see ILuaContext#issueMainThreadTask(ILuaTask)
  */
+@FunctionalInterface
 public interface ILuaTask
 {
     /**