Kotlin: exclude generated code from useless parameter check

java/ql/lib/semmle/code/java/deadcode/DeadCode.qll

@@ -304,6 +304,9 @@ class RootdefCallable extends Callable {
     this.getAnAnnotation() instanceof OverrideAnnotation
     or
     this.hasModifier("override")
+    or
+    // Exclude generated callables, such as `...$default` ones extracted from Kotlin code.
+    this.isCompilerGenerated()
   }
 }